Boost Cuts Out At 3500 Rpm?

[r33me]

Hey i just replaced the turbo on my car which was a reconditioned stock turbo but then it`s like the car is choking on something at 3500rpm and its running stock boost i havent adjusted anything on the boost , but with the boost guage when the revs hit 3500 its.. round the 17 psi boost ,

I dont know whats wrong any idea?

Edited July 5, 2007 by r33me

[Slim Mat]

Ahhh, I didn't think a Gts-t would even run boost that high........in stock setup.

I though you said the boost was "cutting out"?

[zebra]

Hey there,

A little more info would be helpful

What car is it?

what modifications does it have?

Does the boost cut out or the engine, i dont understand what you mean by then it cuts out and 3500rpm.

17psi is a lot if its a stock turbo

The more info you give us the better chance of us being able to help you.

Andrew

[r33me]

Yeah its an aftermarket boost guage , with the previous turbo it was reading 7 psi but now it read above 17 in stock setup . So i dont know if something was disconected.

Yeah as soon as it hits 3500rpm it its like the enging is choking on something.

And the blow off valvue is sooo much louder than before.

Someone said it has something to do with the oil fed line for the turbo, like they said they mechanic might

not have cranked it so there something to do with the oil ... but i dont know it it`s true.

Edited July 5, 2007 by r33me

[r33me]

Its a r33 gts-t with stock turbo and stock ecu ..

Just full exhaust system and pod filter and bov and thats bout it

for the mods.

Its like its choking above 3500rpm ..

[zebra]

Sounds Like Fuel Cut to me...maybe the Actuator is not hooked up.

Wheres the Gurus when u need em

Andrew

[r33me]

Ive got a fuel cut switch will that have any effect ?

[zebra]

It may explain why its not cutting out untill 17psi

Check that the rubber hose that goes from the intercooler piping into the actuator for the wastegate is connected / sealing properly.

Also when you say its chocking do you mean that the car feels like its hitting a rev limiter/stalling at 3500rpm or just not revving any harder and just stays at 3500rpm?

[Adriano]

Way too much boost for the stock ecu(hope the turbo has steel wheels) Id say the hose that goes from the intercooler piping to the wastegate actuator is not connected.

[mad082]

either the wastegate hose isn't hooked up, or it's blocked, or the wastegate is stuffed, or hitting the dump pipe and not opening.

the ecu is hitting rich and retard. even though you have a boost cut defender they still have an upper limit where they will still cut out.

[r33me]

Isnt the stock r33 turbo`s internally wastegated?

[mad082]

yeah, but that doesn't mean there can't be issues with it fouling the dump pipe, or just stuffing up.

[r33me]

does anyone live round the hornsby area that

you know that can have a look at it ?

[r33me]

Hey everyone thanx for your help ...

Ive found the problem it was the bleed valve

it was messed up and messing everyhting else up

I replaced it and now it runs beautifully..