LS1/LS2/LS3/LS4/LS7 etc. - LOGGING, ADJUSTING INJECTOR SLOPE

[jlosh20s]

im still not seeing anything to do with the injectors in the pid's

[06MonteSS]

hmmm... well, if you don't have any fuel injector parameters to log, then there's no way for you to tell what your injector duty cycle is at...

interesting...

[jlosh20s]

are you interested tuning my truck i could even send you the tune its running now?

[06MonteSS]

send me everything I'd need and I'll take a look at the files... if there's anything I can do, I'll letcha know, and we'll go from there...

I need a copy of your stock original backup tune file, and also a copy of the current tune that's in your truck right now (the Last Tune Written)

sound good??

[jlosh20s]

sounds good sending info now

[jlosh20s]

lew is the man he did in one try what my other tuner has been trying to do for 2 months he knows his sh@t when it comes to tuning with a diablo tuner

[06MonteSS]

thanks man!!

[steeleshark2]

bump!!

[steeleshark2]

Bump!!

[fernanbfg]

Lew,

I last posted at "efan control for 2004 Silverado with u7193".

I finally got out on the freeway today (went to Monster Jam in PHX) and did some logging. Ran the numbers through DSLogRedux and it came up with LTFT Bank 1 (12.71401%) and LTFT Bank 2 (11.79003%). I am going to lower the slope to -13%. I attached the log, before adjustments. My only worry is that there may be too much fuel and cause knocking at lower RPMs.

It's an 04 Yukon with K&N 77 Series CIA and Magnaflow cat-back (single).

It already experiences knock between 3500 - 5000 RPMs when at WOT.

I'll lkeep you posted.

[06MonteSS]

if your ltft's are at +11 and +12 now, then that means you're pretty lean, which is why you're probably knocking at WOT...

so, adjusting your slope to -13% to get your fueling straightened out will be fine...

[fernanbfg]

Well the injector slope adjustment seemed to cure the knock, but I still need to drive it a little more and then do a log.

I did notice that that a little more throttle is needed for the kick down from 4th to 3rd (40 - 45 Mph). The lugguing is a little more evident.

[CyberGreyVette]

I just bought a new Diablo Predator for my 2009 Vette. I installed the Performance tuneand drove it for about 115 miles. I decided it was time to do a data log to see what adjustments I may need to make.

I have version U7194.

I Follow Lew's directions and attempted the log the following items:

air/fuel
command throttle
engine speed
intake air temp
longterm fuel trim bank (1&2)
MAF Sensor
Spark Advance
(couldn't find Throttle Knock Spark Retard in there)

I got on the hwy and did the view/record and it only logged about 2 min worth of data before it was full. I thought that was only an issue on the older models. Anyone know what the heck is wrong with this thing? I bought the newest version to make sure I wouldn't have any problems.

[06MonteSS]

yeah, just download the log to your pc using the dataviewer program...

[CyberGreyVette]

Yeah, I figured that part out finally. The dataviewer so far just says I need to adjust Inj Slope UP by 2% (+2) & make a PE Adjustment -2 %. But my main concern is, is 3 min worth of data logging enough to go on? So far I just adjusted the Slope...not sure I'f I'm suppose to adjust the PE based on the hwy cruise log, do you know? Do I need to do any data logging at WOT?