totally lost on maf tuning

[cobracmdr]

What about the sticky under tuning guides for Russel K OL Maf Tuning. I was going to try this once I got my WB

Ken

[oakleafresin]

Yeah Geforce, it sort of came with an unspoken disclaimer lol. I usually filter out the values myself in the final scan but I guess it would be confusing for people just starting to tune. BUT, I have a better solution to this problem.

Everyone: Before you maf tune, you should do this:

This is RISKY, you're going to be going into boost without PE so be very careful with the gas pedal!



This will cause you to be in "PE/WOT" all the time BUT only commanding 14.7:1, so you shouldn't go too far into the gas pedal. 14.7:1 is way to lean for max boost and you will knock. So when you start to see knock, you know that's the limit to how far you can push the pedal down, therefore, that's as far into the MAF that you can tune with a narrowband.

This keeps the AFR at 14.7:1, which is where your narrowband is accurate. Closed loop by its nature, occilates from 14:1 - 15:1 ish, so this stops that while you're tuning.

Put the settings back to stock when you're done.

[GeoJB]

Guys: I am going to make a post on now to tune the MAF for Idle/Cruise and as well as WOT. I have made two custom histograms that work great with the GM V6 3800 cars and honestly seems to be the best method.
__________________
Any progress on this?
or at least post a copy of the scanner config.
Thank you.

[BigDaddyCool]

Yeh I've just started learning MAF as my tuning for 1 1/2 years now has been pretty on/off the mark so I figured my MAF must be my issue.

I haven't run a straight histogram yet MAF vs STFT + LTFT etc..... I've just created a bit of a triangle scale on the maf............ I've found the MAF helps alot for solving knock by reporting more air then is actually there as well as just getting it right.

While this technically removes a bit of power, it's better not to knock vs knock so.....

But yeh.... I think MAF tuning is a must for starting out tuning any car now.... I'll be running up my MAF histogram properly soon.........

[Perforator]

Closed loop by its nature, occilates from 14:1 - 15:1 ish, so this stops that while you're tuning.

If your commanded afr is oscilating while in closed loop you have issues and this will not fix it.

[oakleafresin]

Closed loop does oscillate but it doesn't change commanded AFR to achieve it, in the end, you see the average between the two extremes (14.7:1)