Slater

Recently got a Z1 plenum installed and now there's a vacuum leak. All bolts are tourqed to spec in the correct order except the two that aren't long enough to put a nut on (in the install manual it says "Studs #12 & 17 can be removed or left installed. They will no longer be used."). im not exactly sure what do from here, i've checked all the hoses and retorqued everything. please help if you have any idea what's going on.

DarkZ03

iTrader: (11)

That's why I don't like Z1 and their I/E products, most of them are nonsensical. Motordyne is the only spacer I'll ever use.

icer5160

iTrader: (4)

I would give Z1's support a call. If the Z1 plenum is sealing correctly, then the only other thing I can think of is a compromised vacuum hose somewhere. If the hoses are original, it's very easy to crack when during the removal process. Which engine do you have and which specific Z1 product did you purchase?
Good Luck!
-Icer