Wastegate Actuator Mod

[Munna]

Sydney kid I have got myself a R32 actuator and tested it with an air compressor and yes it started to open at 10psi.

But we I connected it and drove it I opened at 5psi and held 5psi.

Have I connected this wrong?

Or could there be something else interfering?

Ive connected the the wastegate actuator nipple directly the nipple on the intercooler piping and have completely disconnected the the factory soliniod.

Hope you can help

[BOOSTD]

Your not accounting for exhaust pressure on the wastegate. Could also be not tensioned properly. May need to shorten the rod or elongate the mounting holes.

[Munna]

Your not accounting for exhaust pressure on the wastegate. Could also be not tensioned properly. May need to shorten the rod or elongate the mounting holes.

I have tried this. i put a thead on arm of the actuator had to have it realy short before it would make a difference. It would hold 7psi to 5000rpm and then creep to 11psi at redline.

I only have a cat back exhaust though maybe I need a dump pipe?

[BOOSTD]

does sound like your intake system(after the turbo) and your exhaust could be causing a restriction. A restriction on either side will cause boost to drop off. Also when the turbo runs out of efficiency. shouldn't be anywere near that tho.

[Munna]

does sound like your intake system(after the turbo) and your exhaust could be causing a restriction. A restriction on either side will cause boost to drop off. Also when the turbo runs out of efficiency. shouldn't be anywere near that tho.

Maybe. Has anybody tried this mod with standard intercooler and standard dump pipe?

[Kinks]

Are you sure your boost gauge is reading correctly? ie you haven't touched anything to do with its vacuum feed and you know it was reading correct before...

An RB20 actuator at 10psi should not open at 5psi, for any reason. Even if the ECU is pulsing the actuator like mad it can only feed 5psi of pressure to the actuator and it won't open!

I have connected 2 of my vacuum lines in reverse in the past after removing my crossover pipe and the boost did read a fair bit lower than it should have been.

[EnricoPalazzo]

well according to what he told me, he has installed hose which goes from intercooler pipe to wastegate actuator. So boost should be what the actuator is rated at. maybe someone sold u a r33 actuator and said it was 32.

[Guest Robo's]

Anyone done any more research to the actuator holding boost mods?

[Zahos]

i have been trying to source one from wreckers here in melb, but I am yet to either find one or find a wrecker that is willing to part wih it seperately.... (R32 actuator that is)

I might get a HKS item instead...

[GunMetalR33]

Yea I have a FMIC and a Apexi EBC, I can hold 1 bar till about 5000 then it drops back to 12psi till readline. I am pretty sure that it is the waiste gate

Ahhh, are you still running the stock interheater ??

I've got a FMIC and it still does it

Same with me, that extra few psi would be nice up top

J