I'm running about 6-7 psi with utec and just wondering what you 5.5 guys are doing with the maf. keeping it? bypassing it? can i get rid of the maf w/ utec? I haven't looked into it much since the car has been fine until lately where it randomly shuts off and sometimes misfires/wont go over 2k rpm till i shut it off and turn it back on.

 

I am on haltech so I am not longer using the maf but the map sensor. The maf is still there for the iat sensor.

Are you running a map on the utec ?

 

I am, but idk for sure when it turns on, I think +2 psi. It's running an aps twin turbo tune until I get some other things settled. It ran perfect for a while and I changed the crank sensor and it was fine for a trip and was finally pulling like it should, but now has starting problems (need to give it gas on startup) I got another new one and now it hasn't died but it still needs throttle on startup..

 

Same here Im running Haltech with MAP sensor.

 

I would get the thing tuned right. Dont run off another tune. Every car is different depending on mods and size turbo....too many variables. Do you have twin turbos?

 

I fine tuned it just a bit, the car runs smooth and it just runs rich. Same boost same injector size, just tt would spool faster so I run rich sooner.

I'm waiting for my grounds to see if that'd help at all. I've noticed that's been a problem too lately, hopefully shinjiduo ships em soon -_-