I have been boosting my H22A4 for a few months now, running a conservative street tune with uberdata, with a 1.5* boost retard, and the car has been running fine until yesterday. when i started it up and let it warm up, it got a CEL, but when i turned the ignition off to check it, it went away, and didn't come back, but while driving and giving it full throttle, it just makes a huge POP at like 6-7k, and just falls on its face, and sometime i get a CEL, and sometimes i dont, but it goes away when it's turned off. Before i had a "random misfire code" and i am thinking thats what it is. also it feels like i have a boost leak, but only sometimes, its really weird, this happens very randomly, and i cant explain it, so if you guys could help me out, that would rock, and yes, i know that my ringlands will go, i am planning a build after christmas.

here are some mods that might help with solving the problem.
stock H22
SC44 3" open dp
DSM 450cc with Radio Shack resistors
Uberdata 1.7

 

if nothing else has changed, try reburning your bin. you running stock map or 3bar?

 

I am running the stock map sensor, and running 8psi. I will try reburning the bin and see if that helps, thanks man.

 

Is it still running like ****? Do you have any datalogs of your afr's?

 

God, i really wish i did, because it is so random, that i never have my eye on my afr's, because it really feels like it just leans out like crazy. for some reason i think it seems like the injectors just cut out. I have no clue.

 

it could be ignitor issue. As i have ran accross many that pops in boost. changeing the distributor spark plugs and spark plug wiring usually does the trick. it may also be the injectors with the resistors. You should just used saturated injectors.

 

check your plugs. try lowering the gap.

 

back from the mothafuckin dead