Ive got a 95 subaru wrx single turbo has been going ok bit doesent idle perfict and now when we get up in the revs say anywere over 2 to 2 and a half thousand it just runs like a bag of **** please help

Check compression...on all cylinders

turbo pipe split .have a good lok and you will find it .

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sounds like the rev limiter is kicking in to keep the engine from over rev damage, there should be a way to get the limiter disabled or perhaps get the turbo building boost sooner.

The turbos are two different types.One is designed to start a bit lower in the revs and the other to come in when the revs are higher.Its called compounding boost.It can be changed but to put it on a sinlgle turbo would cost a fair bit.If you hot up the ones you have by recalibrating them and exhaust,you do get VERY big gains.The car is more driveable and you can get big boosts in power if the tuner knows what he is doing.Some really big horsepower units come from triple compounding turbos and the torque levels are extremely high.Hope this helps

hi that sounds like the idle control sensor or tps throttle position sensor, if the i.c.s is stuffed you wont be able to boost and ur revs will be all over the show going up andown when car isnt moving hope this helps5

if its been serviced regularly and had all its fluids changed you can get 200,000 plus out of them easily,in melbourne Austraila(where I live)and old guy has a 94 with 345,000 klms seriously and its only had 2 clutches,but its always been serviced properly.Abuse and lack of service they can last 80,000,you must see service history mever take someones word for it,MOST IMPORTANT,i know as ive had 3 or the same car and i love them

Sounds like warped fly wheel.

i have just done the conversion and would do it again supply and fit $3000 goes like wrx .bost 16.5 psi

Hi,
Fault codes as follows
45 Pressure Sensor Duty Solenoid (Turbo Models)
42 Idle Switch or Circuit

Those are the correct codes for a Subaru.

good luck

Dan