MAFT tuning

[ken06]

So I've been having some trouble with my MAFT, it seems that I just can't get it rich enough. I have the base settings on the smallest injectors but still my STFTs are higher than I want. However they never get above 17 so that means the ecu is able to compensate and make a perfect AF ratio right? So I really don't know how to read a log so if you guys can help point me in the too lean or too rich direction it'd be a great help.

RPMS 02v Timing TPS
2204 0.9 30 6
2204 0.85 30 20
2272 0.03 24 51
2324 0.87 18 92
2444 0.91 10 93
2612 0.95 5 93
2784 0.95 3 93
3012 0.97 7 93
3200 0.97 7 93
3384 0.97 8 93
3592 0.97 9 93
3780 0.97 10 90
3988 0.97 12 90
4164 0.97 12 90
4348 0.97 11 91
4488 0.97 9 92
4676 0.97 9 93
4864 0.97 10 93
5056 0.95 10 93
5228 0.95 13 93
5408 0.95 13 93
5596 0.95 15 93
5772 0.95 16 93
5944 0.95 18 93
6104 0.95 18 93
6272 0.95 18 93
6408 0.95 19 93


Can the timing really get down to 3*? Also is my TPS going bad because I was flooring it the whole time yet it shows variation, I will see if it needs adjusted tommorow. But besides the WOT when I roll on the throttle the O2 voltage drops to .03, so should I richen up my Mid setting or is this just normal variation. Thanks for the help.

 

[bmwisthekey]

definently get that tps situation sorted out 1st, is their a floormat blocking the pedel from going down all the way? see what it reads at idle, should be at like 7-8%. wouldnt hurt to do a boost leak test if you havent already before you start logging again. once u get all that under control redo it and post the log back up with tps reading close as possible to 100%

 

[xveganxcowboyx]

Check the TPS position and make sure it is within spec. It may need a bit of adjusting. Not sure of the specifics for adjusting TPS on a 2G though...

The O2 dips low, but it's just for a moment in transition. Doesn't seem like a big deal to me.

I think once the TPS situation is sorted you'll be just fine.