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View Full Version : No Dyno, No Problem?


Marauder131
09-17-2007, 09:39 PM
Is tuning via a dyno essential subsequent to the install of a supercharger, or in the event that one does not have access to a dyno, would a specific tune from a vendor via an Xcal2 suffice in order to run the car safely? Also, does anyone have any opinions on intercooled vs. non intercooled set ups as far as durability is concerned?

Thanks.
RCSignals
09-17-2007, 11:04 PM
I think the tune provided with any of the S/C kits should be fine until you can get to a tuner.
I believe RF stated the tune he relieved with his kit turned out to be spot on after getting to a Dyno.
HwyCruiser
09-18-2007, 04:24 AM
I would at least get a good wideband O2 setup to verify a healthy air to fuel ratio, which is one of the main goals on a dyno anyway.
sailsmen
09-18-2007, 01:19 PM
Intercooled reduces the charged temp allowing more boost/spark/hp.

It does not affect durability.

~450RWHP on a Dynojet appears to be the "sweet spot" for durability for a DD car.

There are a number of S/C w/ 40K-80K miles ~450RWHP and no problems. There are several w/ ~500RWHP that blew up. There are several ~500RWHP garage queens that have not blown up yet.
KillJoy
09-18-2007, 01:23 PM
My s/c kit did NOT run well w/ the provided Tune. The new MAF was not calibrated (I have been told this is normal w/ an SCT2800).


KillJoy
RF Overlord
09-18-2007, 01:36 PM
I believe RF stated the tune he received with his kit turned out to be spot on after getting to a Dyno.RC is correct. I had Lidio dyno mine about a month after the install (done locally) and he said it only needed a minor tweak to the A/F.
Marauder131
09-18-2007, 05:39 PM
What is the optimum air/fuel ratio? I assume that in the event an adjustment is required, that some tweaking can be done via the xCAL2.
KillJoy
09-18-2007, 05:51 PM
What is the optimum air/fuel ratio? I assume that in the event an adjustment is required, that some tweaking can be done via the xCAL2.


Personally... I would not touch A/F w/o a Dyno, or Wideband. I don't care WHAT the XCal2 CAN do.

;)

KillJoy
Marauder131
09-18-2007, 06:45 PM
Personally... I would not touch A/F w/o a Dyno, or Wideband. I don't care WHAT the XCal2 CAN do.

;)

KillJoy

I should have been more specific, I meant with a Wideband also.
MM03MOK
09-18-2007, 07:46 PM
I believe RF stated the tune he relieved with his kit turned out to be spot on after getting to a Dyno.Yep, that's what we said.
Marauder131
09-18-2007, 09:40 PM
What would be the generally accepted safe A/F ratio for a forced induction car?
Marauder131
09-26-2007, 07:57 PM
If one is able to get the A/F to a point utilizing a wideband and Xcal2, is that it? By that, I mean has a person set the parameters without future need for adjustments dependent upon temperature or other factors? Perhaps a strange question to those in the know, but I just want to make certain that I understand correctly. It would also seem then, that an A/F gauge would not be a prerequisite, but perhaps just convenient to have.