- Aug 19, 2023
Yesterday, my n54 decided to become a 5 cylinder for a moment but then fixed its self seconds later. the only code I had was a misfire cylinder 1 nothing else.
Did some logs after to see if I could see what was up.
Car is stage 2+ MHD v10 with DP, IC, CP (stock DV).
Car felt fine and boosted fairly well, but there's a fair bit of timing pull. Also some variation in the RPM line.
I've got some parts on the way hopefully will rectify it, index 12s, NGK plugs, PCV valve, and Forge DV. coils were done recently by previous owner about 6k ago.
Only other thing I can think is maybe a bad batch of fuel? was Tesco 99RON. Going to try the 95RON tune today or tomorrow and see if that fixes it else ill be gentle to the car until all new parts are fitted.
Update: I’m thinking it’s a fueling thing tbh as short term fueling trims are whacky as fuck on the new log and it seems to match how it’s messing with timing. Also air fuel ratio takes the piss to go back to 234 when I let off (which is what it should go to instantly im told ) on bank 2 so I’m thinking leaky or faulty injector bank 2