1G 3-4k idle afer manifold gasket swap

[dsmBear]

My intake manifold gasket was destroyed, couldnt even build boost, swapped with a machv metal one, builds boost and holds just fine and starts right up but it idles at 3600-4k , i have the biss screw all the way down, and everything is plugged in. i checked the throttle cable and its not caught on anything.

 

[gst-turbo]

Have you checked the tps

 

[lasershark]

^+1 on tps make sure its at the .63
Also did you blt?

 

[dsmBear]

^+1 on tps make sure its at the .63
Also did you blt?

Yeah its at .63, I played with the throttle cable a bit, now it idles 1-2k, before I had a little idle surge like 1-1.2k but now it's even worse,

 

[EGLTAWLN]

BOOST LEAK TEST time. it sounds like you have an intake air leak, possibly at the new gasket. did you 100% completely clean off the old gasket on the head and manifold? did you use RTV sealant on both sides of the gasket?

 

[dsmBear]

BOOST LEAK TEST time. it sounds like you have an intake air leak, possibly at the new gasket. did you 100% completely clean off the old gasket on the head and manifold? did you use RTV sealant on both sides of the gasket?

Yeah I scraped off the old gasket no rtv though as it was a metal gasket, I did a boost leak test whuch no conclusive results I'm on the stock bcs and it held 7 pounds and no hissing noises or bubbles