posted
Craige, excellent job on the write-up. I'm sure this will be a very handy tool for everyone who plans such modifications, plus it is also a good education on fuel trims and O2 values.
You did an awesome job - I can't wait to go out and Autotap my car using your config and spreadsheet, then swap my MAF for the GMS MAF, and do it again.
quote:Originally posted by ck98c5: ....And no, I won't be making a Win version....
I've downloaded the new windows version, but haven't used it yet, is there still trouble with it?
BTW: Thanks for the write up. I just purchased a MAF translator
------------------ John D. Brown 99 Camaro SS #738 Pewter, A4 12.25@112.11 (1.78) Race Weight: 3500lbs Whisper; Carbon Fiber Lid, MAF ends, Cat-Back & Ram Air K&N, !Free Mods, TR55/MSD wires, HPPIII, SLP Fan Switch, Cut-Out SY-3500, Trans Cooler, KBDD Subs, ES TQ arm bushing, 17" Nitto's http://www.johnbrown.net/ BADRAP Moderator
Posts: 1 | From: Virginia Beach, VA | Registered: Jan 2001
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posted
Just bringing this to the top. I have gotten a LOT of e-mail from people who have found this useful. I'm also getting a few questions here and there via e-mail, and thought it would be better to discuss the various questions here where everyone can benefit and/or contribute.
I’m interested in tuning my C5 with a-tap and the MAF translator. I’m using the Halltech with the bigger maf ends (no screen) and I also run the NOS (brand) “dry” system—currently jetted for 75hp, but considering a jump to 100hp.
Are there any special considerations given that I’m running the “dry” setup, which relies on the stock fuel system & PCM for additional fuel during N2O blasts?
I don’t have any normal driving a-tap logs, but here’s a few WOT blasts, with and without the juice. I appreciate your input. Excellent article. Thanks. –Jim Moss
posted
Well, with my new headers installed I figured I'd give this a shot. Here's what I found:
My LTFTs for cells 1-19 (non WOT) are around 10 for both banks, so I may want to get a translator for this. Without correlation with a wideband O2 sensor, I don't know about the O2 voltgages, but they are both around 0.86 or 0.87 or so at WOT. Hopefully that correlates to a good A/F ratio. I will try to get to a dyno that has an O2 sensor soon.
Timing at WOT was typically around 28 degrees, and knock retard was always zero except a freakish jump during some light cruising which I will chalk up to noise.
The only thing that concerns me is that the MAFT will learn around my changes after a while, causing them to be obsolete. Any ideas on this? Craige, how has yours fared over the months?
posted
Hey Craige, great job on the template and atap.cfg files. I'm going to try them tonite.
Have one question though. What does FT cell "0" mean. I did a log last night and out of 70 some rows of data, over 30 of them were in FT cell 0. Do I throw these out of my data set or include them in the cell 1-19 average?? What does cell "0" signify?
![[Confused]](confused.gif)
is it just me ![[Crazy]](graemlins/crazy.gif)
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