most weird boost leak ever (took me forever)

[devil_child]

Ok so I had been having a problem with a stutter/misfire at full boost on my rb20 for a while. basically fine until full boost and the afrs would be stable even though misfiring.

So, I had my friend a former dsm owner (though it would help cuz they always have **** going wrong ) new z enthusiast help me.

First we tried to tune it out, no dice afrs dropped but still misfire. Then he's like "ohh this feels like a boost leak trust me."

ok so we leak test it. nothing on the pipes wtf. OHH look at that my wastegate actuator diaphram was broken. which explains why boost wouldnt go lower than 15psi too.

sorry I was happy and felt like sharing. What a crazy place to leak tho...

edit: Sweet Action

[Coolwhip]

Pretty interesteing.

But I still say that the "Knock Off" Greddy Intake Manifold leaking through the casting is by far the crazy.