MAFT problem

garrett21 · 08-10-2007, 11:15 PM

I know this title is seen all to often...
Here i s what is going on with my car. I Just installed new piping and a FMIC, i decided to go with the maft and run blow-thru, i also have an AFC
My logger is showing me a air flow reading but my S-AFC is not? Any ideas.
Also I got the car to somewhat idle but as soon as I hit boost I get what seems to be fuel cut.
And last but not least my car is also reading zero vacume.

I have done a boost leak test, no leaks. Anyone have some advise?
Thank you in advance!

RipperXX · 08-11-2007, 10:29 AM

Did you leave it zeroed out? There are dip switch's inside the MAFT box to turn off fuel cut and "tune" but I really wouldn't use a MAFT to tune with. I have one but I am useing DSMLink so I can't offer to much help.

dnhieu · 08-11-2007, 01:14 PM

did you set your injectors in the MAFT? what i have always done was set the maft for the injectors and tune with the safc...

garrett21 · 08-11-2007, 07:29 PM

Here is an update!
I now have vacume so that is no longer a problem.

I can get the car to idle but my wide band o2 is reading anywhere from 10.00 to 13.00. If i make changes with the maft the car does not respond well. It will some times go from 10.0 AFR and go all the way to 18.00 at which point the car wants to stall.

When I do have it idle at 10 to 1 i can drive it and under low throttle the AFR is regular about 14-15 but as soon as I hit 1 psi of boost I hit fuel cut.

As for the question if I have the maft is set for my injectors yes it is I have tried over compensation and under, just to try and get it to idle. I have had no luck. I also have tired with my chip (set for 550inj) and without....no change.

If anyone has any ideas let me know! Thanks again -Garrett