dra_gon_lee

i have a 87 turbo 2 and im boosting 12 psi, i dont have a boost controller, just 3" exhaust, bov, tb mod, 680 ccs, fcd,

i need to know how to lower the boost. i know a mbc won't work, because it just bleeds off air to the wastegate to close it longer, thus raising boost, isn't that what a electronic one does too? if so how the hell do i lower boost?

this is really weird that you can't lower without a external wastegate, bigger wastegate or lower the diameter of my exhaust...

BLUE TII

iTrader: (9)

Yep, its restrict intake w/ stock box, restrict exhaust or port wastegate.

TonyTurboII

Port the wastegate, or get a 89-91 turbo and manifold.

RETed

Search disabled?&nbsp I answered this several times already...

Put back the stock air box or choke down your intake...
Put a 2" restrictor plate in the exhaust system...



-Ted

dra_gon_lee

blah... this sucks.... i didn't know this b4 i did all this stuff...


would a restrictor in the intake work? i don't have a stock intake box

Ryde _Or_Die

Just post in the far sale/wanted ads. I am sure there are many many people with stock boxes to sell you cheap.

TurboMike

how about if you installed a pop-off valve and plumbed it back into the intake before the turbo. set it to pop-off at 10 PSI (or whatever pressure)

RETed

Yep, you want to choke the airflow from any side - this will lower boost.


-Ted