my vlt is running fine but it will not boost. i took it to macanic today he said he has checked every thing he can think of but is puzzled can any one help me?

rear wheel broken off the turbo? cat converter blocked?

You need to be a bit more specific with your description. Is it not revving past around the 3k mark? What is coming out of the exhaust? Is the engine running rough etc......

As per post two, they would be the most common things.

it is running fine over 2k and sounds like it is blowing off but no power and i mean it just will not boost. there is no ruffnes at all smoth as drive but it should just take off but is lacking power in boost. it realy is strange i need help with this badly if any one can help by fixing it and lives in s.a i will pay them to fix it just want it to go like it did plz rply thx.

unbolt the exhaust before the cat converter and drive it and see if its fixed. thatl rule that out. and unbolt the dump pipe on the turbo and check if the back turbo wheel is still there/all there. thatl rule that out. then come back here with your report

ok will do tomorrow thx

your problem is its an rb20

i unbolt the exhaust before the cat converter and still nothing also unbolted the dump pipe on the turbo its spining fine. when im driving the blow off is still blowing off so turbo is running it just seems like no power to yhe wheels it just feels like your driving a non turbo thx for your help tho fellas.