car ran like crap at the track
05-29-2012, 09:45 AM
#1
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car ran like crap at the track This is a 01 z06 with a ls2 (402) cam dont remember the exact specs 224-228 60lb injectors dual walbro 225's fpr set at 41 static 31 with vac source fast 102 nw 102tb stock heads stainless valves yella terra rockers dual springs 9:3 compression waiting on the turbo still. I am using the tune that was on it when it was supercharged and have changed a few things. car was running lean after I looked at the logs and am not sure why it started doing this. I want to make sure I have all the issues worked out before I turbo it. just wondering if anyone can take a look at the log and tune and make any suggestions. Car ran a 7.9 at 91mph with a 1.9 60ft. I could break down the time slip if anyone needs it. I retorqued the intake mani yesterday and it made a difference in the afr on the way to work, but everytime I go WOT I get knock retard. I replaced the knock sensor last month because the other one was damaged.
Thanks James
track.hpl
WTF.hpt
Thanks James
track.hpl
WTF.hpt
Last edited by ghost-1; 05-29-2012 at 11:22 AM.
05-29-2012, 10:16 AM
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I retorqued the intake manifold yesterday and it seemed to help the afr at high rpm. I am going to do a pressure test today to be sure there is not an issue somewhere else. It has knock anytime I go WOT.
Last edited by ghost-1; 05-29-2012 at 10:21 AM.
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05-29-2012, 05:22 PM
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Weird that it's constantly 10-12% richer on bank 1. Makes me think that, if anything, bank 2 would be the source of the knocking. Possible that you have a dead o2 sensor on bank 2? FI tune should be going RICH, not lean.
05-30-2012, 08:55 AM
#10
"It has knock anytime I go WOT."....O2's are not "in the game" at WOT. So, other tune errors, etc, must be involved.
Have you rescaled the MAF, and the VE table? [If it has a maf.]
"set at 41 static 31 with vac source"...10psi is a big drop in pressure. What does the psi do when you go WOT? [Those injs are rated at 3 bar]
Is this with an adj fpr? If so, is the IFR set to a single value?
Which bank did you put the new knok sensor in? Is it torqued correctly?
Both pumps on all the time? [If it was charged prior to you getting it, it may be staged.]
You mentioned "you changed a few things". They are???
[Sorry, I can't look at the tune/logs as I use EFILIVE.]
Have you rescaled the MAF, and the VE table? [If it has a maf.]
"set at 41 static 31 with vac source"...10psi is a big drop in pressure. What does the psi do when you go WOT? [Those injs are rated at 3 bar]
Is this with an adj fpr? If so, is the IFR set to a single value?
Which bank did you put the new knok sensor in? Is it torqued correctly?
Both pumps on all the time? [If it was charged prior to you getting it, it may be staged.]
You mentioned "you changed a few things". They are???
[Sorry, I can't look at the tune/logs as I use EFILIVE.]
05-30-2012, 03:59 PM
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Ok I am just going to post the stuff from hp tuner forum to make it easier for people to reference. http://www.hptuners.com/forum/showthread.php?t=39222