something seriously wrong! (its long)

[BigRb247]

I recently jsut put my friends stuff tat he sold me on. A big 16, lower intercooler piping, and 2nd gen mass air. After puttuing it on i noticed in second gear it would sputter and backfire i knew it was cuz of the plugs spo i had the mbc sert at 11psi. well i got new ngk wires and plugs and put them on and it was driving ok cuz i hadnet turned up the boost yet. Well when i tried to, the psi still was at 11. SO then me and my friend figured out that the mbc wires were bacwards. so we fixed that then turned up the boost till 17 but it was like the turbo was delaying like it wouldnt kick in till about 5rpm. Then my car staarted making this wierd noise by the drivers side in the engine. Lik ea sputtering wind sound. And i jsut put a new head unit in and ive been driving it and the music will jstu stop playing but on the cd player the numbers are still moving so its not skipping, and when i go to give it gas come back on but then when i shifts it goes out. And some times when i come to a stop it seems liek the car is gana die out. Sorry thsi was so long but i jsut really really need help. any help would be apreciated.

 

[GreddySpyder]

So did you install bigger injectors and a fuel controller to go with that larger turbo? Backfiring is usually caused by running too rich 17psi on a big 16g with nothing but a fuel pump is kinda pushing your luck, you also need something to tune the fuel with if you don't have it already.

 

[BigRb247]

See but the thing is I have 550's but there not in because i need new like o rings. But not the ones u guys are thinkin about. Not tthe little green ones. Im talking about the black ones, the ones that go on the top and bottoms of the injectors. I called RC and AMS and neither of them have them. But its not backfring anymore, its jsut making a sputtering sound