Maf problems

[godfather75]

I'm having problems with my maf. In blow through it hits fuel cut at 4000rms but when I move it to the inlet side it runs and boosts like hell. Problem I have is I have a tail bov so I have to run the blow through. I have tried about three different mafs and all the same results. Did a boost leak test and no leaks. New motor and new turbo. It started doing this after I installed a sbr fmic. I have a dsm chip on the way but I would like to know why its doing it. Any help would be greatly appreciated.

 

[afsdsm]

You are hitting fuel cut due to increased airflow(FMIC), on the inlet side nothing has changed. ECMlink would be worth its wait in gold!

 

[tkelly27]

The MAF isn't designed to be blow through. The newer GM mafs have been having problems sealing, so you could be having a weird boost leak right at the maf. Have you taken a log? If not, take one and see what happens when you hit 4k.

Link is ok, but nobody knows when they will have SD. I've been running DSMap for close to a year now. It would fix all your problems : D

http://www.ds-map.net/

 

[godfather75]

Im gonna try and get a log next week when I get my ecu back.Whats dsmaps?

 

[bling5tatus]

read the front page:

www.ds-map.net

It's the free speed density project... now named Jackal.

 

[tkelly27]

http://www.dsmtuners.com/forums/log...er-gm-maf-install-please-help-dsmlink-v3.html

EXTREME PSI : Your #1 Source for In Stock Performance Parts - GM MAF Sensor 3.0"

If I were running a MAF, I would really only use it in draw through.

Speed density system. No more MAS, no more MAF. It's also got all sorts of tuning functions, including a built in logger and native wideband monitoring.

http://www.dsmtuners.com/forums/tun...l-free-speed-density-tuning-software-1gs.html

I've been using it for a year, and it's been around for about 4 years. Oh yeah, it's free! The hardware isn't but it's only about $200 for the ostrich and sensors.

 

[godfather75]

Don't you have to run a laptop for it?I really don't want that in my car I drive daily.

 

[afsdsm]

You dont have to keep the lap top in the car. Just log the data and save your tune.

 

[godfather75]

This thing is driving me nuts. Just got my chip, no fuel cut, no boost leaks, but still studders at 4k in blow through. If I move it to draw through every thing runs great but my bov is atmospheric. I haven't seen any problems yet but I have read that its not good to do that. I wish I could figure this out I've tried three different mafs all the same results.