LarryJoe
10+ Year Contributor
- 364
- 9
- Feb 10, 2012
-
Davisville,
West_Virginia
So I recently switched to a 3" GM Maft setup. I tune with Ecuflash so I don't need to tune with it, just use it for a blow through setup. The spot where it says my version of MAFT on the board is rubbed off but I assumed it was the old one due to it saying SPARK under the right two knobs. To zero it out I set all five knobs to 0 and all the dip switches off. Well the car idled so rich it wasn't driveable. Wideband wouldn't go over 11. So I flipped it over to 3.5" maf setting and this leaned the car out to around 14.7 at idle. So I took it for a cruise and the AFR's jump around all over the place. Like between 13 and so lean it won't read constantly which makes the car kinda jerky. I tried to boost and as soon as it builds boost the wideband pegs 10 and the car refuses to go anywhere from being so rich. Anyone know what is up with this? I wouldn't think this setup would change how my car ran because I have the maft zerod out. I just need some advice on what to look for here.
