Help, Stock 34 Gtt Issues

[Dave34]

hi guys,

im new to all this and i just bought a stock r 34 gtt and i'm finding im dumping fuel.

some days its fine, other days i find that WOT between 4500 and 7000 rpm i get stutter and loss of power as if there's a flat spot through my range.

also my fuel efficence is 300 kms per tank of average driving on pulp. i had my air flow metre fixed and that helped a little bit but hasn't fixed the problem.

i had a dino run, if this means anything, and am making 152.5 km at the wheels, but my linear graph shows im running at 10.5. after the air flow metre fixed its now at 11.5 apperently it should be at 12.7?

does anyone know a good mec that i can go to i live in melbourne?

all the help i can get would be much appreceated.

thats so much dave.

[gambel]

that figure of about 154kw is right for a stock r34, who said you should be running 12.7?

it could be a timing problem especially since it's over a big rev range.

[so_tred]

Coil packs? It's a common problem when you have issues with stuttering around 4000rpm.

..or so I've read on here many times.

[666DAN]

Sounds like your coil packs to me as well.

Stock boost the ECU is normally aiming at around 11:1 AFR with the boost turned up a bit, the cells in the ROM aim for around 9.8:1 AFR

No way in hell would the car on it's own make 12.7:1 unless boost was up over a Bar..but by then you would have hit the max voltage on the AFM and the engine will cut-out

[Dave34]

thanks heeps guys i'll keep you posted,

if coil packs are the problem does any one know where i can get some? i live in melbourne also i need to find a good mechanic any suggestions?

thanks again dave

[SS8_Gohan]

when the car stutters does it...

a) sound like a WRX?

b) the TCS OFF + SLIP + and engine check light all come on?

if yes, coil packs. Very, very common problem with the R34's. A few options to fix.