Surely someone know if this will work? <img src="gr_images/icons/cool.gif" border="0">

 

Should work will have to richen WOT
with the ported MAF. But the advance
in HPP will give what you want IMHO

 

Thanks for the info. I will check it out Saturday when I have some time for atap runs. I will post the results.

Frank

 

<img src="gr_grin.gif" border="0"> Great more information is a GOOD thing <img src="gr_grin.gif" border="0">

 

Just wondering if using the power programer then tuning with the MAFT would help my timing? Here are my ATAP numbers:

LTRIM (B1) = -0.205 (Normal Driving)
LTRIM (B2) = +0.885 (Normal Driving)
02B1S1 = .881 (WOT)
02B2S1 = .894 (WOT)
Timing = 22 (WOT) (6,000 RPM)
KR = 0 (WOT)

I am using HPPIII for gears, fans, etc. but not the "power programer". I have read posts here that you gain approx. 2-3 degrees of timing with HPPIII. I know that 2001 and 2002 have less timing than older models but I feel that 22 is too low. Should be around 25-26. Anyway, any thoughts here would be helpful.

 

moving to LS1 Computer section...

 

I was in your same position last week with the MAFT and HypertechIII, except I think my timing was 26-28 @ WOT Made a few runs at the track and did not have Atap, but did bring along HypertechIII. So we decided to add the power tuning. No noticable difference but I did manage to knock out a extra MPH on one of the runs.

Next day ran Atap and noticed that YES, the timing was advancing at WOT and the avg's were now 30-31 BUT I was getting the KR back and my O2's at WOT were very lean, e.,g .80-.81.

So, thought I could fix the problem by bumping up the WOT on the rich side. Ran it up to 6% rich and still had lean O2's @ WOT. BTW, this is not the way you want to work the power curve so today,
Im back to "no power tuning", a lean WOT setting on the MAFT and will take some data tonight.

Hope things are back to normal
Later
Rick
99C5 FRC latest mods:
Heads, Hot Cam, Z06 Intake, UD pulley #30SVO injectors...and tuning... <img src="graemlins/gr_chug.gif" border="0" alt="[chug]" />

[ February 28, 2002: Message edited by: RJS ]</p>