your logs are not very good, they do not show the whole rpm range this would give a better view on what is going on. I do not think the MAF is the problem. Or the injectors. I think there is a boost leak maybe the L hose? that still does not exsplain the misfires after you let off. look around your injectors to see if they are leaking around the sides.

Just a thought...

 

they are leaking around the sides...

 

i have thought about this a while and i think its a boost leak...because i had an apexi avcr but ithought the solenoid valve went bad because i would max out boost at 14 psi, then i put on a mbc and turned it up til i got about 20...now i just have to find it...

 

A boost leak would take care of your rich problem but not your misfire problem unless when you let off the petal your car gets super rich and makes the car misfire from an overly rich condition....

Fix/Find your boost leak then we will go from their and see if it is all fixed...

 

finally was able to find a leak...it was right where the hose from the dv connects to the tip...it was really hard to reach so all i was able to do is loosen up and retighten the clamp holding it...it seemed to stop the leak...i want to replace it but was wondering what the best way to reach it was, will i have to take off my radiator and all that or is there enough room from underneath to reach it? also, looking at my mbc, is there supposed to be a pin sized hole on one of the sides, there is some air coming out of that hole as well when i did the pressure test?

 

This thread makes my brain hurt.

You guys know too damn much about cars. Sheesh.

[sm=outcold.gif]

 

if we knew too much, i wouldnt be having problems with my car / or would have been fixed by now...i dont know much...but im learning a lot from going through all this with my car...so have someone mess up your engine and then try to fix it, you'll learn a lot...unless to take it to a shop <--no fun and lots of money...

 

How rich are you running now? Did you fix the boost leak or is it still their? if you did was their any improvement? What kind of MBC do you have?

 

yeah, it felt a little better, the misfiring went down a bit, i just cleared my cel so im just putting miles on it so everything goes back to normal...cant really do any logs yet...i might have stopped it temporarily but will be replacing the hose after xmas...i really think its that o2 sensor though, i should have that sometime after xmas too, along with the new maf sensor...its an ams mbc...same one they use on theirinsane evos...