MAFT and WOT Timing
Thread Starter
TECH Resident
Joined: Feb 2003
Posts: 827
Likes: 0
From: Dallas, TX
MAFT and WOT Timing After getting my WOT o2s to around 890 or so i now have absolutely NO KR.........however my WOT timing has gone down from on average 25 or so to about 19.8.
Is this too low.......is it going to hurt the performance of the car?
BTW: LTFTs are -.8 and the MAFT is set 10% rich base and 6% rich WOT.
The car has a TSP Lid, SLP Smooth Bellows, and Tbyrne MAF ends with the stock sensor.
THx
Is this too low.......is it going to hurt the performance of the car?
BTW: LTFTs are -.8 and the MAFT is set 10% rich base and 6% rich WOT.
The car has a TSP Lid, SLP Smooth Bellows, and Tbyrne MAF ends with the stock sensor.
THx
Re: MAFT and WOT Timing
After getting my WOT o2s to around 890 or so i now have absolutely NO KR.........however my WOT timing has gone down from on average 25 or so to about 19.8.
Is this too low.......is it going to hurt the performance of the car?
BTW: LTFTs are -.8 and the MAFT is set 10% rich base and 6% rich WOT.
The car has a TSP Lid, SLP Smooth Bellows, and Tbyrne MAF ends with the stock sensor.
THx
Is this too low.......is it going to hurt the performance of the car?
BTW: LTFTs are -.8 and the MAFT is set 10% rich base and 6% rich WOT.
The car has a TSP Lid, SLP Smooth Bellows, and Tbyrne MAF ends with the stock sensor.
THx
What integer did your Lterms read at WOT? If they were negative your computer is dumping fuel at WOT and therefore giving inconsistent WOT A/F ratios.
A translator isn't a reprogrammer. It, basically, lies to the PCM and will actually pull timing.
Your 19.8* is a tad low but that is because of your ported MAF ends.
I wouldn't recommend messin' with the MAF in the least unless you had a reprogramming tool like LS1 Edit and a great deal of knowledge about tuning/scaling the Injector Flow Rate tables and Mass Air-Flow tables.
Because the ported ends throw your Lterms waaaaaay out of whach you have to adjust base more; which in turn pulls more timing and so on.
I don't really think you're helping performance once you add the pro's and con's; I'd go out on a limb to say if you went back to your stock MAF and re-tuned with your translator you'd have more power than you have now.
BTW: I very happily ran a Mass Air-Flow Translator for months before I got Edit
Happy tuning!
