hi every one ,
i have question about the ( turbocharged ) Z31 , does the ( blow off valve ) come from the factory or it is installed as aftermarket option ..!?
thanks

 

The turbo z31 with a vg30et does not come with either an intercooler or a blow off valve. I couldn't tell you about the other engines like the rb20det or vg30det that were offered in markets outside of America.

 

are you sure ,
if there is a turbo system in a car there has to be ( blow off valve ) to vent the compressed air out side to the atmosphere .. which the engine does not need ..
the blow off valve has an essential factor to complete the circulation of the turbo purpose ..
if there is no( intercooler ) how to cool the compressed air that goes directly to the ( throttle body ) !!!!
any help would be appreciated ..