Hi all..
Well... Not sure if you know, but car atm is running 7-10PSI, turbo back w/ hi flow cat, FMIC, stock ECU.
Ok setting scene.. Around 11PM, driving on M7, cold nite.
Car running 10PSI as a max on 39% duty cycle. Ive seen it only goto 0.69bar @ 6814 rpm once, in like 2nd or 3rd. (according to AVCR)
1st gear no problems, switch, backfire, 2nd gear no problems. So far so good.
2nd ->3rd, no problems.
1,2,3 all seem to goto 5.5-6.5krpm no problems.
At 4th it gets funny. When I floor it in 4th, around 4.5krpm or abit above, it starts to surge? or miss?. Feels like there is lack or power or not enough fuel or cylinders not igniting. However if I dont floor it it will happily goto 5 or 6 but slowly.
So question is, is this a fuel cut or the engine missing?.
Using NGK Irridum Sparkies ~30k done on em. Stock fuel pump. Stock coils.
This only recently happened when I put the AVCR in, ie. increase the boost.
Some say its the sparks, some say its the coils, some say its fuel cut.
What do you guys think?
Cheers!