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Is My Wastegate Opening Or Is My Car Stuffed :s

R33_Rob

By R33_Rob,
in Engines & Forced Induction

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R33_Rob Proficient

R33_Rob

Posted
Posted

Hi

im pretty new to the whole turbo world.

I have a Series 2 R33 GTST with pod filter, catback exhaust and turbotech boost controller.

I am running 12 psi and decided to perform a modification that was feature in the latest High Performance Imports magazine.

The modification involved cutting out 1 inch of the rubber intake pipe and installing a metal pipe in place of the rubber that was removed. This was done to ensure the rubber pipe stays all the way open during boost. According to HPI under high boost the rubber intake pipe can occassionally suck in on its self during high amounts of boost resulting in lost power.

Anyway.

As i am driving and hold my foot flat to the floor i hit 13psi and the car just backs off all of a sudden it scares the shit outta me.

What have i done??

Is this the wastegate opening??

I know the boost im running isnt safe, but if only hit 13psi twice and the car has lost all power both times. At the moment im trying to drive it on vacuum until my mechanic down tunes the boost to 10psi.

Does anyone know what i have done wrong??

Thanks

stolen_s15 Mentor

stolen_s15

Posted
Posted (edited)

You are hitting rich and retard. The ECU richens the fuel mix and retards the timing, so you dont damage the engine. Run 10psi, much safer.

Edited by stolen_s15
TTT Grand Master

TTT

Posted
Posted (edited)

EDIT - beaten to it..

it's not about safe.

it's about airflow.

R33 and over 10psi of airflow on stock ecu = rich and retard which you will feel as a bad missfire/power loss/jerking type thing.

with the FMIC it will be worse.

the air will be cooler therefore more dense which will mean it will cut out at lower revs say about "4500rpm"

you need some sort of ecu controling thing.

Cheap = SAFC

expensive and better = aftermarket programable ECU (Power FC, MICROGUESS, WOLF, etc etc)

Edited by GTST
R33_Rob Proficient

R33_Rob

Posted
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Posted
i hit R&R the other day for the first time when i installed an tuned my ebc. freaks you out abit hey...ha i run mine on 11psi which i find safe.

yeah, it scared the absolute shit out of me.

I thought they didnt make SAFC's anymore?

might just need to get a second hand one if thats the case.

stolen_s15 Mentor

stolen_s15

Posted
Posted (edited)
considering there is metal reinforcing on the rb25 intake pipe as it is you'd have to be running a LOT of boost...

I have seen one do it with only 260rwkw, took ages trying to work it out on the road, but a good tuner shoudl diagnose ti pretty quick on a dyno.

Edited by stolen_s15
s13_Skyline_inside Proficient

s13_Skyline_inside

Posted
Posted

ive found that every s and r series turbo car has the reinforcement inside the intake pipr, its not a steel tube if that what your looking for, its just a spring that winds itself arount the intake pipe

Simon-S14 Grand Master

Simon-S14

Posted
Posted

Mate of mine has a drift R32 2 door with a 25 in it and found a major power drop one night at a drift prac.... pulled into the pits and while free revving the engine the intake pipe was sucking closed.... they had a look at the pod air filter which was almost black it was that dirty... blew some compressed air through it and all was sweet again. only making 220 rwkw on 1.1 bar too so power is not so much a factor with the stock intake pipe

SevenAngryPenguins Proficient

SevenAngryPenguins

Posted
Posted

hmmm maybe someone took mine out, it had a pod on it when i bought it, definitely nothing in there like a spring.

I might give the steel pipe insert a crack for something to do

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