Having a problem with over boosting on my Automatic FD

I have just installed a full exhaust system, ECU piggyback, etc.. the boost is in a normal pattern between the two turbos but between shifts it will very quickly creep to 15 psi unless i quickly lift off the gas.

this happens in hold mode or in drive mode any Ideas how to control this

Thanks

 

i have the same problem iam currently trying to design a blow off valve that works off the rpm voltage as the voltage raises it closes but at any decrease it opens but besides that you cant do anything i just completely let go off the gas as i shift to 2nd and so on as if you where driving a stick

 

I had an overboosting problem as well when I started to mod my car, not boost creep from the small wastegates, but it would just spike right up like that. Until I can afford an ProfecB or the like I yanked out the stock wastegate/prespool hoses and installed some bleeder valves from Home Depot, cured the problem instantly.. and now I can adjust my prespool/boost which is great. Check out this link:

http://www.robrobinette.com/boost_controller.htm

Matt
93 SSM

 

Well the tranny should shift fast enough that it does not have this problem, i remember having a similar problem... but oh yeah... that was with no WG solenoid connected

 

Put larger pills in the waste gate and precontrol hoses to lower your boost. With everything you've done a boost controller of some sort is in order even if it's the manual one.