Originally Posted by MalibuJack

Well, the external wastegate will offer very little, the turbo is really out of its efficiency range and is already running out of flow.. I have a little strap that I devised that can lock a stock wastegate closed without welding it.

With all this controversy, I am almost tempted to sponsor mike's car so he can get into the 10's on the stock turbo.

I'm also severely dyslexic, and can understand why he has asked someone else to post his thoughts for him.

Also, if he feels his BOV isn't staying closed, I would suggest trying a positive seal valve such as the HKS SSQV, or using a heavily springed TIAL valve, only the TIAL valve will make the car surge badly with the kind of spring tension required to stay closed over 25psi.

I would also suggest revolver cams, I'm running 280s, but when I get my new head I'm swapping revolvers in, and a ported throttlebody and intake manifold at the level of boost he's running it'll help.

Honestly, I'm really suggesting all the stuff that I had done to my car that let me get my car making the power it did on the stock 9.8 turbo.

I DEFINITELY would suggest some sort of blowthrough MAF setup.. I might have a spare setup that will work well with this combination.

Originally Posted by MalibuJack

HOWEVER, It would probably be a better idea to use one than not.. Also notice that picture is of an aftermarket turbo, which probably has an anti-surge cover, and being large and slow-spooling to begin with, so it would be at a disadvantage to run a BOV in drag racing as it would take a long time to build boost up again.