still no power

[The Phoenix]

Just some advice please. My Astra coupe turbo is lagging power when I put my foot down. It wasn't like that when I first bought it. When I floor it in 2nd the traction control doesnt even bother coming on now as it did before. As advised, I got the boost selanoid changed when I got my car serviced recently but that hasn't made a difference. Vauxhall have said they can't find anything wrong with it.

Any suggestions?

Also, what are 'Celtic tuning' and 'Courtenay Sport' like?

Thanks

[sri_kev]

sounds like it could be a massive boost leek, i would check all your hoses to make sure non of them are split!

i have never delt with celtic tuning so i dont know what they are like but i have never had any problems with courtenay sport.

[trickyb]

Im sure that you would hear a boost leak, have you tried a different air flow meter ???? these go quite often and cause various problems.

[The Phoenix]

Nah havent tried air flow meter. How much do they come at? I do hear this constant whistling kind of sound which seems to be coming from the back end of the engine but cant locate it. Not sure what that can be.