Had my car on the rolling road the other day. Only to find out I am running at .5 bar of boost. It was mentioned that it could be the waste gate actuator, so I used one of a TD04 turbo and there seems to be very little difference. Can anyone give me a suggestion as to what to check because my car has a few mods and should be at 280 bhp and it was not making 200 bhp because its not at the right boost. Still feels really quick.
Help apreciated.

 

Come on peeps. Someone on here must be able to give me some advice on what to check....

 

Hi mate has your car had any pipes removed from your 3 port boost valve cos mine was only producing 0.5bar when i fitted a boost gauge so i checked the 3 port valve and i had two pipes crossed,so i swapped them around and now its boosting at 1.2bar

Also mate (if you havnt done it already) have you checked your CEL for any fault codes (loads of threads on here if your stuck)?

Hope this helps