With my current AS&M chip, I am running lean at both part and full throttle. My block learn values are fairly constant in the neighborhood of 138. At WOT, my O2 reads 100mV, another indication that I am running very lean.
Using TunerCat, I have made a couple of adjustments. 1) In the BPW Fuel vs Load table I increased the values by 20% and
2) In the WOT %Change to Fuel/Air Ratio vs RPM Table, I increased the values by 60%.

Before I go ahead and burn the chip w/ these new changes I wanted to get some of your opinions. I want to make sure that by increasing these values I will in fact be "richening" up the Fuel/Air ratio.

Thanks guys,
Neil

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Neil's 383 IROC-Z: TPIS MiniRamIII / GM FastBurn heads / Strange 12Bolt Diff./ Neil's Home-Built BulletProof 700R4+Vigilante 2800 stall converter.

 

Holy Sheeit Neil ... 60% in the WOT table??? Dude - that is way way rich. In the hac there is actually a way to calculate the Air/Fuel ratio for Wide Open Throttle that the computer is trying to achieve. It is based on a coolant modifier and an RPM modifier. I actually wrote a program that will yield these calculated AFRs. The 'percentage' thing displayed in TunerCat and other editors is VERY misleading. Increasing fuel by 60% in this table is equivalent to dropping the AFR into the single digits. That is way too rich if you get the car to run good at part throttle. Don't worry about WOT. Tune your part throttle tables first. This will actually help out the WOT table some.

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.244 @ 112.51mph (1.778 60' / 7.819@88.32mph in the 1/8)
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels.
Gunning for NA 11's with bigger cam, bigger stall, and bigger exhaust.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

Man, I just about fell out of my chair laughing Ok, well at least I am going in the right direction. So, instead of messing with the WOT tables I should stick w/ the BPW fuel vs Load Table, right? By the title of this table it sounds as if this is the part throttle table, am I correct?

Thanks for your prompt response Tim!

 

Neil,

Notice my use of the words 'START' with the part throttle tables. Your system needs to understand what a true 14.7 is before it can calculate something other than a 14.7. Once you are done then go on to work with the WOT tables. I am *sure* that you will have to change them some. But, not as much as what you were going to do.

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.244 @ 112.51mph (1.778 60' / 7.819@88.32mph in the 1/8)
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels.
Gunning for NA 11's with bigger cam, bigger stall, and bigger exhaust.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

Yeah, I know what your're talking about, just wanting to make sure I'm making appropriate changes.
Thanks.