The Rig

iTrader: (13)

i dont often boost in 1st, but when i have, its very irratic and spluttery,other gears are fine,no probs at all

any ideas ?

standard intake, standard engine,HKS dump valve and a decat exhaust, still have 1 CAT.MY95 import.

cheers.......

The Rig

iTrader: (13)

i should clarify, i mean full throttle in 1st

cheers.

vessy

I still have the same problem with mine, wot in 1st, as boost rises normally around the 3500rpm mark engine looses power, like you lift your foot up half way and then back on, sound the same?

I've tried everything except for fuel pump/regulator.

Scott.T

iTrader: (2)

My old 1994 UK used to do the same. I tried all sorts and never fixed it.
The only thing I didn't try was a new fuel pump, so it may of been due to fuel surge of sorts......

ImprezARex

i had the same prob on my 94 wrx and fitted a walbro fuel pump and that cured it

vessy

I think it's definately fuel related, I think i spoke to you scott a few months ago, didn't you say it was leaning out when this happend, confirmed by AFR? I haven't put a wideband on mine but it's definately feels like mild fuel starvation. Think it's due to rapid boost rise along with rapid rise in rpm.

I'm working along the lines of either a lazy FPR or fuel pump, just strange how it's fine in any other gear all the way to red line.