Benjamin_John93

Done a boost leak test, there were no leaks. Took car for a spirited drive and no issues whatsoever, its like it only plays up at night, cooler air maybe? [emoji14]

Will perform a boost leak test again today and see how it goes. I decided to check the condition of my spark plugs, they are PFR5G-11 but are gapped at .6mm, would this cause issues?

So turns out that not only was the boost signal coming from manifold the problem but also both my factory boost solenoid and boost tee are faulty. I ran the hose straight from the intercooler to wastegate and get 5psi with no issues, i then wanted more boost so i connected the hose from intercooler to stock boost solenoid(the top nipple) and a hose from wastegate to the solenoid(bottom nipple) and thr car ran like shit and then died on me about 200m down the road.(and yes the solenoid was plugged in) So now im running a 10psi wastegate from an r32 which seemed to be working perfectly the first time i drove it, went to drive it again later that night and as i was slowing down for lights it died on me and started running like shit (im assuming it R&R). So im wondering if i keep the 10psi actuator on is the car gonna keep going into r&r until i get an aftermarket ecu + tune? And is my boost solenoid had it or am i plumbing it up wrong?

Thanks for the help everyone, i tapped a new fitting into the intercooler piping as suggested and boost is holding perfectly, no more overboosting! [emoji4]

Okay thanks heaps mate I will tap a fitting into the pipework and run it straight to the actuator for now, ill be sure to let you know how it goes. Thanks again for the help, really appreciate it

This is the wastegate on the car, after some googling looks to be an r34 one? This one is a spare i have in the garage which was ment to be off an r33. (has asn79 written on it )

Cant find any hoses on the intercooler piping that run to throttle body, there is one hose that runs from throttle body to charcoal canister?

There is nowhere on my turbos compressor housing to connect the hose to like there should be, and nothing on the intercooler piping either. Could the issue be that the hose goes from manifold to boost tee then wastegate?

It is turned all the way anti clockwise and back off ever so sightly. But i have the same issue even if i connect it to the stock boost controller aswell.

The boost tee? Its wound all the way down but backed off a little

Finally got myself a 1996 R33 GTST after owning a few n/a's. Car is stock except for front mount intercooler and boost tee(currently wound all the way down). 3" exhaust from turbo back, cat has been gutted. But im having issues with boost. I only want to run 7-10 psi max but for some reason the boost will just continue to climb untill over 15psi then starts to cut out. I have tried using the stock boost controller but makes no difference. Car had a boost leak which i thought was the problem but i did a boost leak test and fixed the leak, problem still exists. I decided to check out the wastegate actuator but seems to open perfectly fine(not hitting dump). On inspection of the turbo i noticed that there was no compressor outlet where a hose should run from it, to the boost controller, then into the wastegate actuator shouldnt it? Instead my car has a T piece from a hose that goes from the manifold to the charcoal canister? Dont know much about turbo cars as this is my first and really dont understand why its overboosting so much?

Ball

.

But the cost and amount of effort involved would be alot more then an engine swap wouldnt it?