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Hey guys i have an manual R33 running Power FC, front mount, 3inch tbo bak, bosche 040, screamer & pod filter.

Now it was street tuned by CREATD Motorsports about 2 months ago to run 13psi

without a boost controller, this was somehow done through the gate, not sure exactly

how they did it.. For about 2 months car was going REALLY well..

Suddenly about a week ago i noticed it was going like shit, felt a fair drop in power, because

it was suddenly only hitting a max of 8-9 psi.. I checked all of my cooler pipes and one of

them wasnt in the silicone hose properly, so i fixed that but it didnt fix the problem..?

I also took the blitz B.O.V. off that i was running and swapped it with my standard one to see

if it may have been leaking and still no change..?

Also the car now occasionally jumps up and down on idle from 900-1400rpm or so when it feels

like it..

ANNDDD another thing that is confusing me is it is now always only hitting 8-9 psi max BUT sometimes

it does feel like an R33 running 8-9 psi but other times i punch it, it feels like it is literally a manual

VN 3.8 6 or something!!

This is really frustrating me, does anyone know what else i can check besides cooler pipes and bov

to fix this problem??

Your advise is much appreciated!!

Edited by Dean_HR31

ok it is NOT the turbo.. it was removed & re fitted to do the screamer pipe proply and while off

it was checked out.. turbo was like NEW!

Before i bought the car owner said he had never boosted it & always ran a bov in the 6 years he

owned it, and i believe it cos he really did not know much at all bout anything..

Any other suggestions?

Oh and about the cat converter its not that.. im running a dumby cat with a str8 through pipe through it..

and the exhaust is brand new stainless steel tbo back..

Only thing i have in the exhaust besides the rear cannons is a manual adjustable silencer for the exhaust

hooked up to a lever in the car..

Edited by Dean_HR31
i'd be finding out how the boost was raised if a controller wasn't used. they may have used a restrictor in the line and this may have moved so it is letting more air past.

Possibly the same way I do mine.

Elongate the actuator holes to make the actuator adjustable.

or as you say, a restrictor.

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