Rb20det Afm Problems

[barnoon]

Gday guys

I have a R32 GTST with RB20DET, Mods are: Power FC, 3 inch turbo back exhaust, bleed valve set to 15psi, Apex BOV.

Ive been having a problem for a while that ive been led to believe is caused by the AFM, now what happens is sometimes usually around 3k rpm the car will start to cough and splutter then it will either go away or just stall and take a while to start again, it can be fine for days then play up constantly for one or 2 days.

I had a PFC installed the other day and I thought id watch the airflow levels on the hand controller to see if they changed at all when the car was stuffing up but they stayed pretty much the same with no drastic drops or rises in the level of air flow.

What im trying to find out is that is it possible that it could still be the AFM causing this as I thought the air flow readout levels would be going haywire when the car was spluttering and stalling due to the AFM sending incorrect readout.

Thanks a lot,

Dave

[paulr33]

MONITOR -> 1 CHANNEL -> KNOCK -> PRESS UP

see what the knocking level gets to when the problem occurs

if its below 30 or 40 then its not likely to be your problem.

my next guess would be pipework leak in the intercooler somewhere or coilpacks breaking up