Originally Posted by
mark r
na im running 4x4 engine plus l8 ecu.well i now have idle sorted but now when coming on boost getting fuck off back fires which is cutting out the engine.ive got 55lb siemens with msd chip,but at the moment im only running 20 psi as still running in.would this cause the enginr to flood with fuel as chip telling injectors to put more fuel in but with not enough air or could my timing be slighty out causing back fires?
Thats worrying! If running in you don't want to be running any boost, I woulden't at least!
Could be overfuelling issue, caused by an incorrect input to ECU, have you checked the wires in the dizzy for the phase haven't corroded and shorted? I believe if it's faulty it will cause overfuelling issues which are apparent on boost.
You sure it's not a rev limiter etc lol?
Has the CO etc been set?
Martin