Hey guys, here's a video i took on the way home from LA with the boost going nuts. When you see the needle wobble between 5-10psi thats when im going almost exactly 100mph and my foot is holding the throttle constant. I checked all the vac lines and they seemed ok. Let me know what you think.

http://www.youtube.com/watch?v=5Gti1Vcz2_w

Thanks.

 

i would say it might be some sort of bpv issue.

 

Is there a public road with a 100mph speed limit out by L.A.?

IB4TL.

 

naw, it was on a little private road on my uncles huge chunk of land.

 

or maybe an issue with the actual boost gauge.

 

naw, you can hear the fluctuations themselves.

 

slipping belt?

 

negative on that too. Jan installed a new belt in LA

 

by-pass valve

 

by-pass valve / belt

 

Wait so what does the whole "Vacuum Gain System" mod do?