Crazy Boost Spike In R33 Gtst Auto Any Help?

[punisher6942]

hey guys getting mad boost spike in my 95 r33 gtst its automatic and when i give it a hit off the line or when it kicks back a gear the boost goes absolutely crazy and spikes up to 12 - 15 psi and the car just revs off its tits and goes nowhere and spits a SHITLOAD of black smoke........ can anybody help me with this problem??? or has anyone experienced this kind of thing before??? cuz i dont wanna fry anything..... any help would be much appreciated thanx

[ssshonky]

interesting you should say that.. as our stagea ( RB25DET NEO ) does the same thing.

I am not currently running a boost guage as everything is stock as a rock engine wise.

I think 1/2 the problem is the auto takes so freaking long to change gears.

so when you say it revs its tits off and does nothing.. is this just while its changing gears or after its engaged the gear? how many PSI are you running normally ( ie before it spikes )

what if you turn the boost down does it still happen?

hey guys getting mad boost spike in my 95 r33 gtst its automatic and when i give it a hit off the line or when it kicks back a gear the boost goes absolutely crazy and spikes up to 12 - 15 psi and the car just revs off its tits and goes nowhere and spits a SHITLOAD of black smoke........ can anybody help me with this problem??? or has anyone experienced this kind of thing before??? cuz i dont wanna fry anything..... any help would be much appreciated thanx

[punisher6942]

everything in my engine bay is stock as a rock as well save for the fmic..... im running stock boost with a turbosmart boost tee boost controller wound all the way down so it should be running stock boost regardless.... normally before it spkies its running on 7 psi boost and it happens during both when the gear is engaged and also during gear change depending on the cirsumstances its f**kin weird

[ssshonky]

hmmm . . not to sound like an @sshole but those turbosmart boost controllers are notoriously crap!

they do tend to spike, I foudn the turbotech ones far better ( not to mention heaps cheaper ! )

so your factory boost solenoid has been removed yeh?

are you still running the stock BOV?

hmm .. re-reading your last post I see it happens ( the spike ) if your in gear or not.. that would make me even more suspicious of that boost T

the turbotech ones were well received by the people on this forum so I would be pretty surprised if

someone near you does not have one they can loan you jsut for testing reasons

[punisher6942]

it was spiking before we put the boost tee on there we put the boost tee on there to try and control it to keep the boost down and yeah still running stock bov i got the boost tee for nothing off a mate so yeah i dont know man... like i said it was doin it before i put the controller on there so i have no fkn idea lol

[ssshonky]

have you checked that your wastegate actuator is working ok? ie its not sticking or anything is it?