Classic impreza hesitating Need help

hi i have a classic impreza that is hesitating at around 0.7 bar of boost and it will not pull through it , its like it is missfiring or fuel starvation.
The car has been converted to run on newage coil packs recently and has had a replacement MAF sensor put on it,all of this has not changed a thing its still doing exactly the same .
car also has decat pipe and FMIC

vac pipe split near turbo
i had the same thing on my green scooby

i have had all the vac pipes off and looked at them they seem fine,but i will recheck them tomorrow

I have a split in my turbo intake pipe and mine does the same thing.
It is situated under the manifold, should be a black hose unless its a samco which a doubt will be split

ill have a look is this the one coming from the air filter? sorry im new to turbo cars .

yeah

Right I have checked every pipe on the car for splits or cracks and they are all fine .

Air fillter ?

Air filter is a k&n type filter

Might be worth poping around to drew finn or andykindon to take a look mate

Hi m8 I have been to see andy he is trying to help with it I'm trying to do the work myself to keep costs down

You could spray brake cleaner around engine to check for leaks but you need to be careful when doing it.

Are the plugs ok? Are the coil packs good and reading ok?

Yes m8 plugs are new . Checked the actuator today and its a none adjustable one and it just slips over the waste gate pin there is no preload on it . I'm starting to think its over boosting

Right just a quick update the car has had it's bost solenoid changed,cam sensor changed,crank sensor changed and is running on Newage coil packs all vac pipes changed and it is still hesitating / misfiring at around 4k the car will quite happily rev on the spot but on the road under load it just feels like its hesitating . If I do not boost it it goes above 4k no problem.

Help needed as I now don't no where to turn

fuel pressure have you checked this side of things blocked filter or pump on its way out just a possibility mate ?????

what codes are you getting from ecu ??????

I think this is my next area I could do with trying a new fuel pressure regulator and a fuel pump but its all money at the mo . Spent a fortune on it and its still the same

I'm not getting any codes at all there it is not bringing the light on

Put a bottle of forta down its neck and give it a good old thrashing. ..... Could be something as simple as a sticky injector

It's going to get a gallon of petrol and a match before long

mine was hunting at tickover brought no light on so when I tried to reset ecu it flashed up code 32 if I remember correctly faulty 02 sensor it turned out to be so it might be worthwhile just to check and it costs you nothing bud

I'll try that cheers

no probs

Car all sorted now the problem if any body is interested was the fuel pump and the crap in the bottom the tank blocking the filter .
Thanks to Andy for getting to the bottom of this prob

nice one bud glad its all sorted