3Psi Drop In Boost

[TJR32GTS-T]

I went pretty hard at winton over the weekend and once I got my car home and drive it I noticed it is only hitting 15psi compared to my normal 18psi.

My first thort was turbo on the way out as there was oil all over that side of the engine bay, but turns out my catch can was full and my drain plug wasn't done up properly.

I did rip out one of my bolts from a flange on the decat pipe and the arse end of my exaust is just hanging on. Is the lack of back pressure enough to make boost drop by 3psi?

I think the spring in my actuator is 15psi, possibly stuffed boost controller?

What lines/hoses can I check that may have come loose?

I havnt had a chance to look over the car properly because of work I will get stuck into it over the weekend.

I will check cooler piping and fins/shaft play aswell just want to cover all bases.

My car is a r32 gtst

Cheers guys - Trent

[markdem]

i once bent a wastegate open (internal gate) from too much heat/pressure. but thats just my stupid piece of shit.

[SargeRX8]

Back pressure doesn't create boost, it restricts it.

[GTSBoy]

Boost leak from a slipped clamp or split hose is a possibility.

[TJR32GTS-T]

Yeah I will go all over that on the weekend cheers, I wound the boost down on my controller and my gauge still reads 15psi, I'm going to check the hoses off the solenoid aswell

[boostn0199]

Id say you got a leak somewhere aswell.

[Harey]

Is it more laggy? Does it feel less powerful overall? Does it sound like the turbo is running really hard? If so yeah I reckon a leak somewhere.

If its not, then I would be looking at the boost controller.

[pipster11]

Melted/ collapsed cat?

[boostn0199]

Melted/ collapsed cat?

hes got a decat

[pipster11]

Well wont be that then

[TJR32GTS-T]

Double post

Edited November 30, 2011 by TJR32GTS-T

[TJR32GTS-T]

Thanks for all your input guys, still yet to have a proper look tho because of work. Will keep you updated for whoever is interested