Stock log from 08 MN6, diablo tune + inj scope corrected

[BoostFrenzy]

looks lean and knocking here and there, what do you guys think?

[Grumpy_Aero_Guy]

It does seem to be kicking in with some significant TKSR every now-and-then. It seems to occur at relatively low rpm when your throttle is matted. May be normal and OK.... Maybe Monte can chime in here.

Your WOT AFR does look a little lean at higher RPMs. No fuel trims in there to look at. Generally, 12.6 for WOT AFR I would consider the leanest I would be comfortable with....

BTW, what kinda gas you runnin...?

This, of course, assuming there isn't some corvette eccentricity I am not aware of....

[BoostFrenzy]

BP 93 octane, doesn't me pulling -8% on the injector slope to fix the LTFT's make my WOT leaner?

[concoursd]

opposite. -8% on the injector slope means that you are telling the computer that the injector is 8% smaller so it will therefore dictate the injector to spray more fuel. This will have the affect of richening up the WOT fuel table as well once the fuel trims stabilize again after driving a few miles. Keep logging and using the DSLogRedux to dial in your setup till you get virtually no KR and an LTFT of 0 to -2.

[BoostFrenzy]

my trims are perfect

[06MonteSS]

hahahah.. how the hell do you know that, you didn't even log the long term fuel trims!!

you only logged your spark advance (timing), intake air temp, engine speed (rpms), MAF sensor, throttle position, AFR, and total knock...

you need to log Long Term Fuel Trim Bank 1 and Long Term Fuel Trim Bank 2

and you need to do a steady cruising log, keeping your rpms steady somewhere between 1800-2500.... which this short log is not...

you need to start over...

read, re-read, and read again... http://diablosport.com/index.php?name=P ... opic&t=917

print that sucker out ^^^^


your WOT AFR looks good tho, at 12.6...

[BoostFrenzy]

nooo... i logged the trims before doing any wot pulls and adjusted the slope -8% so now they're -1 - +1% @ 2400rpm in 4th, once i had that resolved i went to WOT logging

[06MonteSS]

k, should still log the trims tho... cuz if they're positive trims at WOT, then extra fuel is being dumped in on top of the PE fueling table...

need to make sure that they're 0 or slightly negative at WOT...

[BoostFrenzy]

k, should still log the trims tho... cuz if they're positive trims at WOT, then extra fuel is being dumped in on top of the PE fueling table...

need to make sure that they're 0 or slightly negative at WOT...

well it's WAY too lean, look at all the pings 3800-4000 and i get AUDIBLE pings punching it @ 2500 sometimes, something's really wrong...

[06MonteSS]

so go +4% in the PE fueling for that rpm range... that will add in some more fuel

[BoostFrenzy]

yeah i considered adding in PE, 4% for both ranges, I want ~12.4-12.5:1, you should never have to add in PE though right?!

[06MonteSS]

I wouldn't go +4% in both rpm ranges.. .the upper range looks ok.... maybe +1 or +2% in the upper... and +4% in the lower...


k, I'm outta here... be back online in a few hours...

so get your checkbook or credit card ready..

[BoostFrenzy]

added some fuel, now it's worse GRRR!! wtf? bad gas?

[06MonteSS]

send me the tune file outta your car, I wanna see something... you need to "read extra tune" while predator is hooked up to your car...

then connect it to your PC and export the extra tune...

here's info on how to do it:

http://diablosport.com/index.php?name=P ... pic&t=6547