Got a boost gauge fitted, usually holds at 10 but when the prob occurs the needle jumps about from 5-10 and generally stutters, and backfires for a couple of secs then it goes okay. I havent played with the boost myself, just fitted the engine and went out to play.
> I havent played with the boost myself, just fitted the engine and went out to play.
Did you know how the engine ran before in its orignal car?
Did you ever look or get the K16 checked?
If you just plugged the engine in, it could be loads of things. See the c20let tech manule on www.max-boost.co.uk as that shows and tells you how boost works and what the ECU does, frm there you'll understand what the problem could be. Otherwsie I'll just chuck out a load 'could be's' of what the problem could be.