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Wastegate Actuator Mod

EnricoPalazzo
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Munna Rising Star

Munna

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Posted

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

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Munna Rising Star

Munna

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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?

Munna Rising Star

Munna

Posted
Posted
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 Grand Master

Kinks

Posted
Posted

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.

  • 1 month later...
GunMetalR33 Mentor

GunMetalR33

Posted
Posted

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 :cheers:

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

J

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