i have a dilema

[LANDY]

well, yesterday night me and a couple of friends from Miami went to have some fun on a clear road late at night. MM, 300c hemi with 150 shot otherwise stock, srt8 300c chipped and exaust.

at first i had my share with the 150 shot, on a 30 mile roll he jumped on me and then i started catching up till 125 then i let of, but i never passed him, i had 3 heads in the car including me, they were two in the other car.
and a 60 mph roll we stayed right by each other till 120 i started walking.

now the srt8, first race 30 mph roll, i spin he takes of i couldnt catch up, second race we did a 60 mph roll he had 2 head in the car while i was by myself. we hit it and he just starts walking me hard, while i sense a hesitation on second gear at around 5500 rpm, but i stayed on it, once i let of @ 110mph he had easily 5 car lenghts on me. then my CHECK ENGINE light came on, it was the same code as before. FUEL LINE PRESS REGULATOR SENSOR. i pull over and decide to clear the code.

here is my dilema:
on the way home i had 3 heads on the car and he was by him self, i knew i had to try it again, so i lowered the tire press to 26psi and warmed up the tires then then we went on a 20 mph roll, i didnt spin, jumped in front of him and stayed there till 120 that i noticed he started passing me. no hesitation and it certainly ran harder.
i ask you guys.
could it be that the fuel pump it working intermitent?
anything else?
thanks.
LANDY

[ImpalaSlayer]

Landy, didnt you just have DR give this car a clean bill?

[LANDY]

yup. but it acted fine then, and every single time that i got on it, till yesterday nite.

[ImpalaSlayer]

yup. but it acted fine then, and every single time that i got on it, till yesterday nite.

that always happens. sorry man, cant help you.

[bob6364]

What are you using for additional fuel? BAP,bigger fuel pump, Both? What is the code number that you clear? I would guess if that sensor was going bad it would tell the computer to send the wrong voltage to the fuel pump.

[SpartaPerformance]

that always happens. sorry man, cant help you.

Do you mean its a common issue for that code to come once in a while on supercharged MM's?

[ImpalaSlayer]

Do you mean its a common issue for that code to come once in a while on supercharged MM's?

no sorry, should have been more specific. i mean that when there is an intermittent issue you can never get the car to reproduce the problem in front of someone else.

[LANDY]

i have a dual focus pump.

[LANDY]

What are you using for additional fuel? BAP,bigger fuel pump, Both? What is the code number that you clear? I would guess if that sensor was going bad it would tell the computer to send the wrong voltage to the fuel pump.
code is : p0190

[RR|Suki]

How much do they charge for the FRPS these days? If they aren't very expensive I'd try swapping in a new one.

[W4LTD]

The p0190 code is kicked when the Fuel Pressure goes below 30 psi.

You either ran the tank too low or you need to upgrade your fuel setup for your application. Constantly kicking the code means you are low on F/P and you will blow up a S/C car eventually. Most cars are tuned for 39-40 psi delta. When it drops below that the car will start going lean. I have had a few kick it simply because they didnt have enough fuel in the tank and sucked the pump basket dry.

http://www.modularpowerhouse.com/forums/showthread.php?t=31654&highlight=P0190

[bob6364]

The p0190 code is kicked when the Fuel Pressure goes below 30 psi.

You either ran the tank too low or you need to upgrade your fuel setup for your application. Constantly kicking the code means you are low on F/P and you will blow up a S/C car eventually. Most cars are tuned for 39-40 psi delta. When it drops below that the car will start going lean. I have had a few kick it simply because they didnt have enough fuel in the tank and sucked the pump basket dry.

http://www.modularpowerhouse.com/forums/showthread.php?t=31654&highlight=P0190

some things to remember...
1.if the fuel can't get to the pumps fast enough it don't matter how pump you have...You may have to modify the tanks internals a little...
2. If there isn't enough voltage going to the pumps...it don't matter how much pump you have...new FRPS or upgrade,wire upgrade mod or bap
3. this one is tuff to track...certain duel pump configurations will cavitate we had it happen to my buddy's fox drag stang took 2 months and 3 trips to the track to figure out....he ended up calling Walbro directly and they explained it to him...

[LANDY]

The p0190 code is kicked when the Fuel Pressure goes below 30 psi.

You either ran the tank too low or you need to upgrade your fuel setup for your application. Constantly kicking the code means you are low on F/P and you will blow up a S/C car eventually. Most cars are tuned for 39-40 psi delta. When it drops below that the car will start going lean. I have had a few kick it simply because they didnt have enough fuel in the tank and sucked the pump basket dry.

http://www.modularpowerhouse.com/forums/showthread.php?t=31654&highlight=P0190
i had the tank right at 3/4 of gas.and thanks for the link, everything they describe is ecxatly whats happening to me.

[Pat]

We discussed this in previous threads. I am given to understand the P0190 code will come on when the pressure is above or below a certain level or range.

My car began throwing this code after I was supercharged. I had the pressure checked and it was good, by fuel gauges, at idle and intermediate RPM. The pump was checked with a full 12 volts applied via the trunk mounted fuel pump driver assembly (motor off) and all was good.

My CEL comes on once a week or so after I turn the motor on, only once while driving at low speed. Makes me think that there's a cycle involved.

Anyway, never seemed to notice any adverse performance associated with this fault. I have changed the FRPS but that was no help.

Zack posted a while back that this parameter is adjustable in the tune and can be expected in S/C'd cars.

DR did send me a revised tune file that pretty well fixed the problem but the CEL lite, P0190, still comes on once in a while. No rhyme or reason.

[Dennis Reinhart]

well, yesterday night me and a couple of friends from Miami went to have some fun on a clear road late at night. MM, 300c hemi with 150 shot otherwise stock, srt8 300c chipped and exaust.

at first i had my share with the 150 shot, on a 30 mile roll he jumped on me and then i started catching up till 125 then i let of, but i never passed him, i had 3 heads in the car including me, they were two in the other car.
and a 60 mph roll we stayed right by each other till 120 i started walking.

now the srt8, first race 30 mph roll, i spin he takes of i couldnt catch up, second race we did a 60 mph roll he had 2 head in the car while i was by myself. we hit it and he just starts walking me hard, while i sense a hesitation on second gear at around 5500 rpm, but i stayed on it, once i let of @ 110mph he had easily 5 car lenghts on me. then my CHECK ENGINE light came on, it was the same code as before. FUEL LINE PRESS REGULATOR SENSOR. i pull over and decide to clear the code.

here is my dilema:
on the way home i had 3 heads on the car and he was by him self, i knew i had to try it again, so i lowered the tire press to 26psi and warmed up the tires then then we went on a 20 mph roll, i didnt spin, jumped in front of him and stayed there till 120 that i noticed he started passing me. no hesitation and it certainly ran harder.
i ask you guys.
could it be that the fuel pump it working intermitent?
anything else?
thanks.
LANDY


Some times it can be adjusted in the tune, when the car was here there was no low FP, it can be a low drop at wot and the FRPS sees this, yes the car had a clean bill of health David, as Landy gets more comfortable with the car there may be small changes needed such as this or any other S/C car. And this problem can be fixed with proper data, it some times can easily be fixed by adding a large gage wire direct from the battery to the trunk to the FPDM to a external relay this allows more current and is far cheaper than a BAP. I found out Friday that some Pro chargers had Walbro 255 installed, this is a bad idea, the 255, is for return style constant driven 12V FP, not pulse modulated return less cars, if this is installed the modulated signal will shorten the FP life span, the Focus as well as the GT should be installed, I prefer the GT with a larger truck filter for the lower RWHP Marauder, by that I mean less than 450 RWHP, but that is my opinion.

[Local Boy]

Just a thought...

Get a BAP! w/ a direct 10 gauge / 30 amp relay...This will assure NO voltage drop = constant FP

Your tuner can simply adjust the threshold for your fuel presure regulator ^ to allow for spikes....

This worked for me...

Aloha

[DOOM]

You should have creamed that SRT/8

[ctrlraven]

If your car was Silver you would of had no problems. I ate a 300 SRT/8 before, quite tasty.

[DOOM]

If your car was Silver you would of had no problems. I ate a 300 SRT/8 before, quite tasty.

That's what's confusing me! :confused:
He should have been beating a N/A SRT/8 with a S/C marauder.
Something isn't adding up! :dunno:

[ctrlraven]

That's what's confusing me! :confused:
He should have had beating a N/A SRT/8 with a S/C marauder.
Something isn't adding up! :dunno:
Must not be running a Zack tune. lol

[DOOM]

Or maybe a TRILOGY perhaps. :D

[burt ragio]

As mentioned sounds like it could be a voltage drop. Use larger gauge wire & relay. Also remove the bends in the rubber line at opposite sides of fuel filter . They may be restrictive or collapse. Then use larger fuel filter.

[LANDY]

You should have creamed that SRT/8
honestly i was pretty amazed with that chrysler and disapointed at my car:(

[DOOM]

Check for low compression.

[CRUZTAKER]

... this one is tuff to track......

Not on a dyno.

When I went with 2.9 pulley it was very clear the jets on my car were no good. It also became clear the alternator shutting down at WOT was dropping voltage to critical components throughout the car.

My alternator now stays on at wot, I run 60lb injectors, and use dual gt500 pumps for fuel. Never race below a half a tank of gas.

There is still a tuning issue with your car perhaps...and focus pumps don't cut it once your'e near 500 rwhp.

....and didn't he say the 300c was spraying a 150 shot??? 150shot to a hemi...
That equals gobs torque...far more than even the trilogy boasters have.

Doesn't matter what blower he is using...lose that topic quickly......

[LANDY]

Check for low compression.
i did that a month ago and the #s were between 175 to 185.plus when we put it on a dyno two weeks ago the car was perfect and it ran the same amount of hp as it did 3 years ago.

[LANDY]

Not on a dyno.

When I went with 2.9 pulley it was very clear the jets on my car were no good. It also became clear the alternator shutting down at WOT was dropping voltage to critical components throughout the car.

My alternator now stays on at wot, I run 60lb injectors, and use dual gt500 pumps for fuel. Never race below a half a tank of gas.

There is still a tuning issue with your car perhaps...and focus pumps don't cut it once your'e near 500 rwhp.

....and didn't he say the 300c was spraying a 150 shot??? 150shot to a hemi...
That equals gobs torque...far more than even the trilogy boasters have.

Doesn't matter what blower he is using...lose that topic quickly......
yes the 300c was on deep on that juice, he was smoking anything and everything that nite and always ran with the bottle warmed up, for god sake he got like 7 car lengths on a brand new M3 with exhaust and tuning work.
i knew i wasnt a player for him, but for the srt8 i should have done more than stay beside him (on my best run).

[bawazir]

http://www.mercurymarauder.net/gallery/data/500/medium/MM_and_srt-8.jpg (javascript:;)

I have tryed to beat the srt-8 so many time always been 4 car's behind. Those ****ing car's are fast :( The only time you could beat an SRT-8 if you had supercharger

[LANDY]

look at my sig timmy, i have one.

[Dennis Reinhart]

honestly i was pretty amazed with that chrysler and disappointed at my car:(

Well there is no need for that, you have to get used to aspects of the car that is what is the most fun about racing being repetitive and dialing the car in, improving traction as well as reaction time and not racing on the street that will get you or some one else killed. Your car made the same power as when it left here years back you have the sheets to prove it, so stay positive.;)

[LANDY]

Well there is no need for that, you have to get used to aspects of the car that is what is the most fun about racing being repetitive and dialing the car in, improving traction as well as reaction time and not racing on the street that will get you or some one else killed. Your car made the same power as when it left here years back you have the sheets to prove it, so stay positive.;)
Dennis, i hope you didnt take it the wrong way, i know my car is running strong and i have to get used to it a little more, you did a magnificent job tuning the car. im very appreciative with your work, i just though even though the srt8 weighted maybe a couple hundred pounds less than me my superior power would of made a better impact on him. i am positive, it was just not a good feeling at the time.

we were bieng really carefull on a road that has no traffic whatsoever 2am. in that road you can see headlights for more that a mile away.
thanks for your help and again im confident about your good work :D

[LANDY]

plus we all know nothing is perfect when modding a car.
its like an endless chain, you always got to keep adding links.

[DOOM]

....and didn't he say the 300c was spraying a 150 shot??? 150shot to a hemi...
That equals gobs torque...far more than even the trilogy boasters have.

Doesn't matter what blower he is using...lose that topic quickly......

Hey Barry the SRT/8 he raced (according to him) only had a chip & exhaust NO JUICE!!! :nos:
That's why I don't understand why he lost. That's what dosent make sense!
Looking at the mods on his marauder he should have killed him!
When my car was making only 425RWHP and had stock manifolds with 3:55's. I was killin em' left and right! :shot:

[LANDY]

well, the 5.7 hemi had a 150 shot, and it was murdering the srt8 over and over, and the srt8 as doom said it had chip and exhaust.
this guy has been spraying that car for over a year, timing is retarded by 3 deggrees, its a total sleeper.

[DOOM]

Bro I don't know what to tell you
you should be killing a SRT/8 that only has a chip & exhaust!
When I raced those cars (chargers, challengers & 300's all SRT/8's) it wasn't even close!