Standard boost solenoid

[croat]

Having boosting problems with my r33 gtst. on occasion when i step on full-throttle the car may jerk around and the boost will play up. when it does this power goes dead and the boost is low then all the sudden it may jump forward for a sec then go dead again. i am thinking it is my boost controller and maybe it is not wired up correctly??? attached is a photo of how it is set up. anyone have any ideas, what should with my standard boost solenoid after fitting a bleed valve?

[Jay95R33]

Dude - the hoses on the bleed vavle are way too long, this will cause boost spikes, and going by the length of the hoses there's gunna be BIG spikes !!

That's probably going to be your problem - boost spikes.

Make the hose length as short as possible, like only a few inches.

J

[croat]

ok will do this now... this has just been temporary as the previous set-up was taken apart. what about the standard boost solenoid? do i have to block it up, and disconnect the plug from it?

[Jay95R33]

Cool,

Yeah, with the stock boost solenoid just unplug the electrical connector, and make sure you block the return hose so it doesn't leak.

What boost levels are you running BTW ? I wouldn't go over 12psi on a series 1 and about 10psi on a series 2.

Cheers

J

[croat]

just fixed up the hoses, they are reasonably short now. still a problem tho. if i boot it in a gear the boost goes to 8psi (thats all i set it at, standard as i have a full exhaust), then when i change to the next gear it only boosts around 1-2 psi and the car barely moves, dont even chirp the wheels... all gear the boost will be real low trying to rise but to no avail? anyone??? if anyone can post pics of their bleed valve set-ups it would be much appreciated... Thanks for your help Jay.

[Jay95R33]

Ahh, OK. So the surging and spiking has been fixed, but now there's another problem..

To me, the new problem sounds like your wastegate is getting stuck open, so it's not letting the turbo generate boost

Does it have this (new) problem when you run the factory soleniod with no bleed valve installed??

Try running a hose from the cross over pipe to the wastegate actuator with no bleed valve and no factory soleniod and see what it does. If everything is OK it should hold about 5-6psi in most gears.

J

[croat]

Yeh jay just blew my computer last night so it cost me a whole day today to buy a new one. It is running 10 psi now, there is a little missfire around 4500 on occasions, but apart from that its pretty sweet. Thanks heaps for your help just had no idea what to do with the standard boost thingy, but its all fixed now...

[Jay95R33]

Cool good stuff. Well, not good about the computer, but good that it's all working now

J