help me please my head is gonna pop boost problem on 95 wrx

[bullmastiff]

hi guys i am new to this forum my freind told me that you lot would have a good idea what is going on right when the car is idleing its ok but if yiu give it a good sharpe rev when it comes back to idle it allmost stalls but then take it for a run it runs ok till it starts to come on boost then it just starts like missfireing and kicking out a bit of black smoke there are no codes coming up its all clear i have had new coilpacks a new airflow meter a lambda sensor and new plugs help me please cheers

[YBNormal07]

What year? Any mods? Could be a lot of things.

clean out your throttle body
PCV valve (good chance)
Engine management. If you installed a new sensor, this could be the culprit. Any way you can log your parameters?

[bullmastiff]

What year? Any mods? Could be a lot of things.

clean out your throttle body
PCV valve (good chance)
Engine management. If you installed a new sensor, this could be the culprit. Any way you can log your parameters?

hi m8 its a 1995 wrx the mods are fmic and hks airfilter. baileys dump valve .what is a pcv valve and where is it located i need to learn cheers wayne

[YBNormal07]

Please google PCV valve rather than have me educate you. It'll be easier on all of us.

What engine management are you using with those modifications?