I wanted to post to bring this back for a quick update. Car has been running well except for a small drivability issue. I stumbled across this post
And I believe this is my exact problem.
A part throttle hiccup when the boost bypass shuts as I transition into boost. This week I'll be pulling the blower off and doing a fresh set of intake gaskets, and modifying the hose from the blower plate to the boost bypass solenoid to accept a nitrous jet. I have a few different size jets ordered so I can fine tune how quickly the bypass shuts to get into boost. Apparently this is a known issue with some whipple setups. Newer cars that have this problem are drive by wire and it can mostly be tuned out, not so with our cars.
Other then this hiccup the car runs nice with the cams and 3.4. I'll keep you posted.
Low pressure spring on boost bypass valve on 2.9 whipple
So my lower pulley recently broke leaving the blower sitting still and I notice a massive difference in my car. Idle smoothed way out, pulling off, 3 point turning in the driveway etc. all smooth as can be. With the blower working I have a lot of idle surging and it's difficult to work the car...
www.svtperformance.com
And I believe this is my exact problem.
A part throttle hiccup when the boost bypass shuts as I transition into boost. This week I'll be pulling the blower off and doing a fresh set of intake gaskets, and modifying the hose from the blower plate to the boost bypass solenoid to accept a nitrous jet. I have a few different size jets ordered so I can fine tune how quickly the bypass shuts to get into boost. Apparently this is a known issue with some whipple setups. Newer cars that have this problem are drive by wire and it can mostly be tuned out, not so with our cars.
Other then this hiccup the car runs nice with the cams and 3.4. I'll keep you posted.
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