View Full Version : F.i.t Kit. Still having problems.
Spilner
10-29-2008, 04:51 PM
Alright Guys. I have had this Fit kit on my car for 5 months now and still having problems with the fuel. I have had people help me in thinking what it was. Basiclly the problem is fuel. Driving or crusing around the air/fuel is fine. But when i get into boost the car leans out so much that i have to get out of it right away. It keeps throwing the check engine light for "fuel rail pressure sensor." I have replaced that with everything else fuel related. Like Injectors, fuel rail pressure sensor, Fuel filter, Fuel rails, Fuel control module in the trunk. And also replaced the walbro 255 fuel pump 3 times thinking they are bad. The fuel pressure on the car is fine at idle but when you rev it up it drops. So that is the reasoning for the really lean air/fuels. I can get the fuel pressure to rise when in boost. But tonight i was thinking maybe the predator is not comcating with the car. Cause no matter what adjustments i do under the custom tune settings does not effect the car. Plus when i go into real time data and i select "gas driveability" It tells me that the selection is not compliable with this Car or vec. Plus it wont read rpms. Like the rpm is not in any of the catagorys. Somebody please help me. Ask as many guestions as you like. I have not been able to enjoy this car since i supercharged it. Here is a link i made awhile ago about this. http://www.mercurymarauder.net/forums/showthread.php?t=46515&highlight=predator
Thanks for all the help
Spilner
KillJoy
10-29-2008, 05:02 PM
42 pound injectors
Ford GT Fuel Pump
KB Boost-A-Pump
This solved MY fuel problems!
:up:
KillJoy
Spilner
10-29-2008, 05:08 PM
Where you having these kind of problems. Cause i am tried of buying stuff that is not fixing it. Plus how much was the ford gt fuel pump and can you get it at a ford dealership.
Local Boy
10-29-2008, 05:16 PM
First, STOP replacing parts...
Have you had the car tuned on a dyno?
Are you trying to tune the car with the handheld tuner?
What source are you using to determine that you are lean and lack fuel pressure?
What MAF are you running?
How do you know that the ECM took the tune?
Did you do the install?
ALOHA
KillJoy
10-29-2008, 05:18 PM
Plus how much was the ford gt fuel pump and can you get it at a ford dealership.
I started off with this....
<$100 Ford Dealer
KillJoy
+2 have you been to a dyno?
Where do you live, I will recommend a tuner in the area.
MM2004
10-29-2008, 05:33 PM
Take your MM to Lee Blankenship.
He lives pretty close to you.
Mike.
Spilner
10-29-2008, 06:17 PM
I was going to take it to lee blankenship. But i also dont want to take it there with the messed up fuel problems. Cause Most likly i will be in the same boat. But after i got all this fixed he was on my next todo list. I have took it a dyno. Just having fuel problems. And after spending 400 at the dyno and no results i dont want to do that again. I put a aem a/f gauge in my car and that is how i monitor if it goes lean or not.
Its a long shot, but you may have a bad driver in the pcm.
Whats your computer code?
Spilner
10-29-2008, 06:20 PM
First, STOP replacing parts...
Have you had the car tuned on a dyno?
Yes and no results due to fuel
Are you trying to tune the car with the handheld tuner?
Yes the predator that the kit came with
What source are you using to determine that you are lean and lack fuel pressure?
Aem Air/Fuel Gauge
What MAF are you running?
Lighting Maf that came with the kit
How do you know that the ECM took the tune?
Just what the predator tells me that the tune was installed
Did you do the install?
Yes i did. And i have check over me work 100 times. It boost fine, idles fine. The kit was installed right.
ALOHA
I answered your guestions
Spilner
10-29-2008, 06:21 PM
Its a long shot, but you may have a bad driver in the pcm.
Whats your computer code?
Its Bmdo. How would i know if its bads.:cool:
Local Boy
10-29-2008, 06:46 PM
That info. helps narrow the scope...Thanks
As far as the fuel sensor code...I had the same problem...
Your sensor is calibrated to accept a specific range of parameter (value) with regard to pressure...Changing the pump (high flow) increases that value (higher pressure) causing the ECM to read a value outside the set calibration...causing it to throw a code...
FIX:
Your tuner needs to raise that value, so the ECM sees it as normal (within the set parameters)
This is how my tuner fixed it for me...
Also...You cannot safetly tune a blown motor to run at peak performance (WOT) with a handheld. PERIOD...
It does not allow you to adjust the fuel and timing tables, and include other variables like "load" and such...
Personally, I ditched the Diablo, and went with SCT...alot better support where I'm located...
Your issue is quite simple...
It's THE TUNE!..........The Electronics___________________ _!
Good Luck...
ALOHA
Spilner
10-29-2008, 07:01 PM
Should i go with sct and get it tuned and it should be fixed.
MarauderTJA
10-29-2008, 07:03 PM
How much boost are you running and what size injectors?
Its another longshot, but the PRVV in the fuel tank might be bad.
Thats the valve that blows off excess pressure (right above the fuel pump)
Spilner
10-29-2008, 07:11 PM
I was just wondering why everybody else seem to not have a problem with the predator. And i just cant get it going. Like i said i hate spending money that doesnt fix the problem. I am just wondering if anybody else has had this problem.
Spilner
10-29-2008, 07:16 PM
I am running like 7 psi and blue ford injectors that came with the kit. Yeah i know that piece zach. I am wondering if i can buy that at ford.
Why dont you get a hold of Magindat and get another file to load on your tuner, just to rule it out.
I am running like 7 psi and blue ford injectors that came with the kit. Yeah i know that piece zach. I am wondering if i can buy that at ford.
7? The car wouldnt run
MarauderTJA
10-29-2008, 07:19 PM
I was just wondering why everybody else seem to not have a problem with the predator. And i just cant get it going. Like i said i hate spending money that doesnt fix the problem. I am just wondering if anybody else has had this problem.
I have had two Prochargers on my car. A P1SC and now a D1SC. I still use the Predator for my 93 octane tune, but also have a two postion Diablosport chip that has been tuned by Scott Beer who is now located at Mustang Specialities in Pompono Beach, Florida.
A good tuner can locate your problem with fuel without a problem. It may be fuel pressure, not enough injector, MAF may need a MAfia extender and other problems. Don't spend anymore money until you contact someone who knows what he is doing. Zack can help you better than anyone else here. But fixing your problem over the internet is not the answer. Your car needs to be in competent hands. Marauders are big heavy cars and they are nothing like tuning a Mustang.
Local Boy
10-29-2008, 07:20 PM
I say find the closest dyno that is either a Diablo or SCT Dealer in your area...
Have them re-write you a custom tune...
Problem solved...
Going cost you $$$
But dayum...You came this far...finish it!...
Lesson's cost $$$
Been there...Done that myself...LOL
We can try this...
I still have my original Diablo tuner that came with my kit...
I never touched it, never downloaded it...nothing...
I went with SCT from the very start...
And I'am SO GLAD.....
Anyways...
You can have it...and try it out...see if it works for you...
If it does, it's yours...From one Procharger to another...
ALOHA
Edit: I switched software only because my dyno guy was a SCT Dealer...
Diablo is a great product as well, just not located here, near my home...
You can drop your car off at my place any time
MarauderTJA
10-29-2008, 07:23 PM
I am running like 7 psi and blue ford injectors that came with the kit. Yeah i know that piece zach. I am wondering if i can buy that at ford.I agree with Zack here. Contact Rich (Magindat), although I believe he is running higher boost than you. Your boost levels are low, injectors are I believe 39 lbs. Do you know what size pulley you have? You should not be having fuel issues with that low of boost.
Spilner
10-29-2008, 07:24 PM
7? The car wouldnt run
7 to 9 and it runs lean. I have a two tunes and i load them and nothing happens that is why i say i dont think my predator is doing nothing. magindat doesnt have a tune. But i got some from hwycrusier
MarauderTJA
10-29-2008, 07:27 PM
I doubt it is the Predator..No offense, but you are following the commands exactly like it reads? DID you have the proper software in your computer to load the tunes? Not trying to be an azz here, just trying to help.
Spilner
10-29-2008, 07:32 PM
I agree with Zack here. Contact Rich (Magindat), although I believe he is running higher boost than you. Your boost levels are low, injectors are I believe 39 lbs. Do you know what size pulley you have? You should not be having fuel issues with that low of boost.
The pulley I am not sure whatever came out the dsc1.
Spilner
10-29-2008, 07:34 PM
I doubt it is the Predator..No offense, but you are following the commands exactly like it reads? DID you have the proper software in your computer to load the tunes? Not trying to be an azz here, just trying to help.
I have the dsdownloader and then read hwycrusier predator tips and tricks he wrote up. Maybe i am doing wrong. But it seems like i am doing right
MarauderTJA
10-29-2008, 07:35 PM
The pulley I am not sure whatever came out the dsc1.
A number should be stamped on the pulley. AT 7 -9 it may be a 3.90 size. You really need to know what pulley it is as this regulates your boost number. A D1SC spools up boost much faster than the P1SC.
MarauderTJA
10-29-2008, 07:37 PM
I have the dsdownloader and then read hwycrusier predator tips and tricks he wrote up. Maybe i am doing wrong. But it seems like i am doing right
I don't know how far you are from Zack, but if I were you I would make arrangements with him to get your car right.
Embassy
10-29-2008, 07:39 PM
I am going to speculate he has the 3.7 pulley that came standard with the FIT kit.
Brian, if you go to Lee's let me know and I'll join you.
MarauderTJA
10-29-2008, 07:43 PM
I am going to speculate he has the 3.7 pulley that came standard with the FIT kit.
Brian, if you go to Lee's let me know and I'll join you.
Yes, that is the pulley that comes with the F.I.T. Kit with a P1SC. A 3.7 pulley is what I am running on my D1SC and I am pushing 16-18 lbs boost at 6600 RPM. It would have to be a larger pulley with the D1SC if he has stock internals.
Spilner
10-29-2008, 07:43 PM
I guess i will talk to zack and lee blankenship
Yeah embassey i will call lee and let you know
I need to firgure this out before i put it away for winter
MarauderTJA
10-29-2008, 07:47 PM
I guess i will talk to zack and lee blankenship
Yeah embassey i will call lee and let you know
I need to firgure this out before i put it away for winter
Honestly, your problem is a tuning issue with a small glitch. You will get it straightened out. Also, make sure you are using TR6 plugs.
Local Boy
10-29-2008, 07:52 PM
^^^Agreed^^^
ALOHA
Spilner
10-29-2008, 07:53 PM
I hope i really apprecate you helping and talking to me
Bradley G
10-29-2008, 08:37 PM
You shortened the gap, on the one step colder than stock spark plugs?
Spilner
10-29-2008, 08:54 PM
You shortened the gap, on the one step colder than stock spark plugs?
NO i have not.
A hearty thanks guys for solving my "fuel rail pressure sensor" code. Since being S/C'd the car throws this code once in a while. I clear it and the car works OK for a couple of weeks. Something was telling me it wasn't hard ware. Now to find a tuner nearby.
Regards,
It is entirely possible whoever programmed your Predator made a mistake and did something wrong.
Load a known good file and try again.
Local Boy
10-30-2008, 08:37 AM
That's what I think, also...
The invitation to try mine is still open...
ALOHA
Bradley G
10-30-2008, 11:37 AM
The gap for supercharged applications is smaller than N/A by about half.
I'm not saying this is causing a drop in fuel pressure, but you may as well start to rule things out.
NO i have not.
Spilner
10-30-2008, 06:38 PM
I am going to take it to a tuner. And i saw zach is almost 5 hours away from me. So i might go to lee local. If he cant help. i am coming to you zach. Local boy i will be more then happy to try it just let me know what i need to do thanks.
Local Boy
10-30-2008, 07:08 PM
Just drop me a PM with where, and to whom, you want it sent...:beer:
ALOHA
magindat
10-31-2008, 07:34 AM
It's probly a 3.7 and that'll give about 9.5 wide open. Randy's predator has a tune in it that was done on my car on a dyno.
This sounds like a tune problem to me. Also the 90mm lighnting maf that comes with the kit is just abrely enough. It pegs pretty easy and will require a bigger MAF or a MAFia extender.
A decent tunign shop shoudl EASILY be able to sort of of that out. i bet your missing either the MAF transfer function or as Randy said the correct maps for the upgraded pump.
The 255 pump and blue injectors should be just fine an VERY safe with a 3.7 pulley.
One thing no one has mentioned is if you are running your stock crank pulley. I know you said 7-9 psi, so it seems you are, but just to ask - an underdrive crank pulley will totally screw up the calculations for boost.
Lastly, are you getting your BOV vacuum directly from the manifold? If your BOV is closing at the wrong time, the car will do whacky things.
Spilner
10-31-2008, 10:13 PM
yeah i am still running the stock crank pulley. And i hooked the vaccuum line to the source it told me to and the way i have seen other peoples hook up in pics. Hopefully the tune will fix it. Thanks guys for all the help. More info the better.
Drewstang
11-01-2008, 07:00 AM
Brian, I'm going to throw my two cents in here. While Lee is a good tuner and I've never heard of any problems with his tunes, I am going to take my car to Charles at Automotion this winter. It has been said that Lee's tunes are extremely safe and he leaves the "adaptive learning" feature active. This means a few months after you have it tuned, you will need to reload the tune because the PCM has overwritten or relearned the tune.
I can tell you that Diablo was a good choice when the handheld tuners first came out, but SCT has since blown past them in tuning ability and dealer support.
Brian, I'm going to throw my two cents in here. While Lee is a good tuner and I've never heard of any problems with his tunes, I am going to take my car to Charles at Automotion this winter. It has been said that Lee's tunes are extremely safe and he leaves the "adaptive learning" feature active. This means a few months after you have it tuned, you will need to reload the tune because the PCM has overwritten or relearned the tune.
I can tell you that Diablo was a good choice when the handheld tuners first came out, but SCT has since blown past them in tuning ability and dealer support.
Wow, points for Drew!
You should NEVER leave adaptive learning on in your Blowercar...EVER!
The pcm will not overwrite the entire file, that is wrong, but it goes something like this....
with adaptive learning off, your car will behave identical to the day it left the dyno shop, guaranteed.
Spilner
11-01-2008, 07:36 AM
And i know charle's real well. BUt he never told me that he could tune sct. Cause that is where i dyno my car and when i was having all those problems. I guess i am going to have to call him.
Spilner
11-06-2008, 06:39 PM
Well i took it to the dyno today. Put a new tune it with two diffirent tuners. And it still didnt work. From 2000 to 4000 the a/f is fine. But 4000 on the a/f is really lean. It shows that at 2800 the fuel pump is at 100%. BUt yeah guys i am at a lost right now and i left it with the guy to try and figure it out. But if anybody has any suggestion again. Please feel free to ask or anything.
I bet the PPRV is upside down or broken.
http://j.mustangcars.com/J/stang/tt/06work/fuelsystem-052.jpg
KillJoy
11-06-2008, 06:58 PM
I have a Tuner here in Central OH that is VERY good.
If you would like to make the 3 hr trip.... I KNOW I can get you appointment.
:up:
KillJoy
I have a Tuner here in Central OH that is VERY good.
If you would like to make the 3 hr trip.... I KNOW I can get you appointment.
:up:
KillJoy
Doofus, its a hard part thats the problem, not the tune
KillJoy
11-06-2008, 07:00 PM
Doofus, its a hard part thats the problem, not the tune
Don't call me a doofus. It makes me sad.
:(
KillJoy
Spilner
11-06-2008, 07:42 PM
I bet the PPRV is upside down or broken.
http://j.mustangcars.com/J/stang/tt/06work/fuelsystem-052.jpg
Can you buy this at a ford dealership. ANd i guess i will go ahead and put a bigger fuel pump in. Is there a way to tell if it is broken once i get it out.
I dont know if you can or not.
I may have one laying around.
The Walbro 255 that is in there is plenty big for the supercharger, so dont go and change it.
There is something blocking fuel flow and you need to find it.
SC Cheesehead
11-06-2008, 08:16 PM
Don't call me a doofus. It makes me sad.
:(
KillJoy
DOOFUS!
(:hijack:Somehow, with events over the past couple days, calling you that makes ME feel real good!:D)
Spilner
11-06-2008, 08:17 PM
I dont know if you can or not.
I may have one laying around.
The Walbro 255 that is in there is plenty big for the supercharger, so dont go and change it.
There is something blocking fuel flow and you need to find it.
Yes i do. ANd if you have one laying around let me know and i will buy it from you. That is the only thing i have not change so maybe that is it. BUt i did find out today it wasnt the tune. So now i am back at square 1.
An easy way to tell if your fuel line is blocked is to log the Fuel pump duty cycle at idle.
If everything is ok, it will read 15-25%
If blocked, 45%-90%
You can jump the fuel pump at the FPDM and disassemble the fuel system starting at the fuel rails and work your way back to the fuel filter, then tank to narrow it down.
When you notice a difference in flow, you know where the problem is.
Wait a minute, I may know what the real problem is.
Did you bend the fuel pump assembly at all when removing it and installing it?
If so, that will cause the fuel sock to smash itself on the bottom of the tank, causing all the problems.
...it happened to me and it took me years to figure it out.
Spilner
11-06-2008, 08:49 PM
I dont believe i smash it. I took the fuel tank out of the car to remove the pump. But i will check. But everything looked fine when i put it back in.
Plus when i put the third fuel pump in i put it in some gas and that pprv was letting fuel out so i thought maybe that was it. But it was pulsing up and down so i drop the fuel tank and pulled the pump and put that pprv back on. then the car ran fine for 2 weeks and then went crap again. And that is when i started this thread
FordNut
11-06-2008, 08:55 PM
Maybe a leak at the PPRV where it was removed and re-installed on the plastic hard lines?
Spilner
11-06-2008, 09:06 PM
I checked it before i put it in. It didnt leak. unless it started tp crack over time. Cause it was fine for 2weeks. But then went crappy. But before it was fine for 2 weeks. i had all these exact problems. Just one day i decide to replace the fuel pump. Reinstalled the tune. And it was fine. But now i reinstall the tune. No fix.
Marauderjack
11-07-2008, 04:43 AM
Just a guess but could you have put the fuel filter in line backwards??:cool:
Just a guess but could you have put the fuel filter in line backwards??:cool:
Hmmmmm.
I think its the lines in the tank
Local Boy
11-07-2008, 11:38 AM
100% duty cycle + low fuel presure = blocked and/or leaking lines or bad pump...
ALOHA
Take the pump assembly back out (without dropping the tank) and take some pics.
If you want me to help you, I will be passing through Indy next Friday morning and will gladly look at the fuel pump assembly for you.
Marauderjack
11-07-2008, 03:07 PM
Take the pump assembly back out (without dropping the tank) and take some pics.
If you want me to help you, I will be passing through Indy next Friday morning and will gladly look at the fuel pump assembly for you.
What more can ya ask??:beer:
Spilner
11-13-2008, 05:51 PM
An easy way to tell if your fuel line is blocked is to log the Fuel pump duty cycle at idle.
If everything is ok, it will read 15-25%
If blocked, 45%-90%
You can jump the fuel pump at the FPDM and disassemble the fuel system starting at the fuel rails and work your way back to the fuel filter, then tank to narrow it down.
When you notice a difference in flow, you know where the problem is.
Well zack yesterday day i found out at idle the fuel pump duty cycle was at 63%. SO i guess i have a bad pprv. so i gues my guy is going to try to find one and then go from there.
Local Boy
11-13-2008, 07:29 PM
Good to hear your on to something...
You'll get it soon......
ALOHA
Spilner
11-13-2008, 09:46 PM
Good to hear your on to something...
You'll get it soon......
ALOHA
I hope so. I just cant wait to drive it supercharged
Drewstang
11-15-2008, 07:48 AM
Once you get that straightened out, we need a 3 wide race between you, me, and Embassy. :D
Embassy
11-15-2008, 09:07 AM
Once you get that straightened out, we need a 3 wide race between you, me, and Embassy. :D
WTF? Fast n Furious style? :lol:
Any more updates, Brian?
Spilner
11-15-2008, 09:09 AM
Sounds good to me
Spilner
11-15-2008, 09:10 AM
Went ahead a bought a gt500 fuel pump and harness and other stuff should be here monday. So soon
Embassy
11-15-2008, 09:12 AM
Went ahead a bought a gt500 fuel pump and harness and other stuff should be here monday. So soon
Great. Now you need to buy my BBK TB and ported upper intake. :D
Give me a ring when you're getting her tuned.
BODYMAN
11-15-2008, 09:14 AM
IT SOUNDS LIKE JUST LIKE A GOOD TUNE(CONSIDERING EVERTYTHING ELSE YOU HAVE ALREADY DONE) FROM SOMEONE THAT HAS WORKED ON OUR TYPE OF CARS BEFORE HAD A SIMILAR PROBLEM ON MY KB 1 DAY AT A EXCELENT TUNER AND PROBLEM WAS FIXED. GOT TIRED OF SPENDING$$$$ AND NOTHING GETTING FIXED MY WAS ALSO DETONATING THE PLUGS (NOT GOOD) AFTER THE NEW TUNE CAR WAS TOTALING DIFF AT WIDE OPEN THROTTLE!!!! i WOULD TRY THAT COULD BE THE CHEAPEST ROUTE 1ST. i GOT A GUY HERE IN stl THAT SEEMS TO GET IT RIGHT THE 1ST TIME EVRY TIME!!!!!
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