i remember ppl saying the compressor wheel on the turbo can shatter or sheer off on T4 or higher equiped cars, but is it NEEDED? i was looking at a pic of Ruud racings sapphire and i cldnt see a d/v n that looks like a T7 or summit?

 

A dump valve is needed when you are driving past a group of 15 year old girls that are standing outside One-Stop trying to get passersby to buy them a bottle of Diamond White.

 

so true!

think it would be daft to risk not running one on a T4 or similar spec turbo.

guess it also comes down to how much boost you run too. Personally I wouldnt risk not running one on a T34 or above (assuming its running high boost)

 

yea as i thought, jus listened to a know it all mechanic (or tuner, think he's a mechanic ) on a local cruise site say he's heard the build up of pressure is detrimental to the turbo (not at all ) and that all cars run d/vs. . .

http://www.strathycruise.com/phpBB/v...ic.php?t=31937