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I have a series 1.5 and pulled 165rwkw on stock boost with only an exhaust and front mount - sounds like something is seriously wrong with your tune and/or engine. Even conservative dynos shouldn't be showing what you got.

Ive not seen a apexi boost controller before but thats what ive been told the car has, When i bought the car though it was running 1.5bar with the stock turbo, im hoping the power delivery isnt to do with the turbo being stuffed?

Errr...1.5 bar? I wouldn't run 1 bar on the standard turbo. The fact it hasn't blown itself to pieces is nothing short of extraordinary - consider yourself lucky you only have power loss! I suspect it might be damaged though?

i wouldn't jump to that conclusion just yet. generally if the turbo is shagged then it generally won't build boost at all and it will either blow smoke or make horrid noises.

if the car has an electronic boost controller then it may be the gain settings, etc that are causing the slow boost rise. i personally don't like electronic boost controllers for running relatively low boost, but that's just me. if it was me i'd be disconnecting it and getting one of the cheap turbotech boost controllers and running that. also make sure you aren't relying on the stock boost gauge.

another thing to look for is broken manifold studs. pop the bonnet and look at the exhaust manifold to see if there are any studs missing. there should be 2 per cylinder. if he was running that much boost then it wouldn't suprise me if there are a few broken since the cars are getting on a bit now and nearly everyone i know (people i actually know, not just randomly talk to on here) with a 33 have had a broken manifold stud. i did with mine, as did a mate who i put a bigger turbo on for, and as does another mate with a 33.

Im not sure how you go about changing the gain on this boost controller, unless its done by the pfc?.

I have changed the gaskets on the manifold and the turbo and all the studs seem to be intact.

Would the turbo behave this way if it was only slightly damaged ie: small chips on the blades?

Im thinking maybe the tuner has retarded the ignition, i have not looked at the service manual for an r33 yet and have not had a chance to check it myself, also im not sure if he can alter the timing under load in which case im not sure about checking it at all.

Thanks for the response.

Chris

  • 1 month later...

Hey all

just an updateon this thread. have purchaseda set of the yellow jacks coil packs and they have made a massive difference to the car. Havent had the chance to get another tune but the car is much more drivable and much better on fuel (still drinks like a fish) 350klm's to a tank max.

Another question relating to my PFC, i was looking through the settings menu and within the afm menu i discovered an option ive not heard of before. There is a listing for a Super Intake afm just below the Normal R33, have done a search but cannot find any info on this, i am just curious

Regards

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