Frustration with the MAF-T

daedalus · Post by **daedalus** » Wed May 04, 2011 11:20 pm

I just picked up a Starion running with a 3" GM MAF Pull-Through (Atmosphere side of the turbo) running a MAF-T of course.

Problems I am having, car seems to hit a wall at 3000rpms. I've seen people post about this issue on other site, but have never had any one say anything. I can post the settings when I get home.

Engine: Has about 200miles on it. I'm running 0-3 PSI.
Turbo: 14G
Injectors: 850/650
Fuel Pump: Walbro 155LPF I know it's a big new one.
Cam: It's of decent size trying to get official numbers still.

I'll post MAFT settings tomorrow. I just need to get this thing driving better.

kurb_appeal · Post by **kurb_appeal** » Thu May 05, 2011 9:54 am

What we always did on the dsm 4g63 running that as well as ecu link was set all the maf-t values to 0 and run tuning off of the ecu link. Made this problem disappear because maf-t is really hard to tune. Those little knobs accept the tiniest adjustments and are very hard to get correct. Not sure if this is possible with you setup but you should turn it all down and start from scratch so you know what you have. Either way you go you are going to need some for of data logging, and/or a decent wideband 02 sensor so you can visually see what is going on and dont run to lean/rich and really mess something up.

This should get you started on this daunting task. It will take a while and is much easier when driving and getting in and out with your hood of the car for a bit. And a buddy who can watch and read for you and if you can talk him in to getting in and out in and out....... you will get it.