well as alot of you maybe know my lsj is turbo, and i got the car tuned yesterday and when i was tuning yesterday when i putting boost up,when i got up to like 27 psi the car started braking up about 5,500 rpm's and the check engine turns on and its code p0103 mass air flow high frequency? some people told me the maf is maxed out? anyone have any idea what it could do? maybe run a lnf maf if it could be done?

 

the ECU unit every month or so. Engine light comes on for a while and goes away when I unplug and plug back in which resets the ECU. Have to do this sometimes a few times until it resets correctly.

 

damn 27psi. lol. what is this an Evo?

 

what u mean disconnect the battery for couple mins and then do it again????

made 454 on stock long block just arp bolts n cometic headgaskets n diamond racing pistons

 

Let the engine change sound a bit and plug back in. Sometimes I have to do it a few times then it will be good for a while and then repeat. Running 24 psi and about 350 plus hp. I don't know if that is part of the problem or the fact that I am running with a larger exhaust leak I haven't fixed.

 

Yep, maf is maxed. Some people fool it by running a larger diameter pipe around the maf.

 

im running a 3in intercooler piping right now, ur saying to run something a little bigger? like what size?

bump really need some help :/

i was runnin 23 psi for a while never gave me any problems but one i put it up to 27 car started breakin up

can i use a 08-09 cobalt ss/tc maf sensor

 

http://www.zzperformance.com/cobalt_...=933&catid=174

 

doesnt the MAF max out at 22.5 psi? because i am also LSJ turboed and if i go past 22.5 psi, my boost gauge resets to 0.. i dont know if thats because i have the LSJ boost gauge still or what lol but i remember somewhere saying that theres a limit of 22.5 psi.. and streetdreamz found a way around it.. he made a how to somewhere to change the MAF.

 

the stock MAP sensor maxes at 22.5psi. streetdreamz did a ghetto speed density tune, removing the maf from the system.

richard i was thinking about it more. you might have to put a piece of 3.5 inch pipe where the maf is. your starting to get where few lsj's have ever gone so there is no clear cut answer for this

 

Yea bigger around the maf section 3.5 like blazin said.