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NoDOHC · 04-23-2009, 10:05 PM

Porting the wastegate when you have the turbo off is always a good idea.

I think that you are talking about the twin scroll actuator (gives you faster boost response) a picture of it would help.

The stiff to spin may be due to lack of oil. if there is no play, you are probably ok.

The recirculating blowoff valve is quiet, while the open one is louder (Pssssht when shifting gears). The open one will dump boost more quickly and is better for higher boost applications.

04-23-2009, 10:05 PM	#2
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 17	Porting the wastegate when you have the turbo off is always a good idea. I think that you are talking about the twin scroll actuator (gives you faster boost response) a picture of it would help. The stiff to spin may be due to lack of oil. if there is no play, you are probably ok. The recirculating blowoff valve is quiet, while the open one is louder (Pssssht when shifting gears). The open one will dump boost more quickly and is better for higher boost applications. __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)