I don't know about "size," but I know a few have used the TIAL blow-off valve.
I've been lurking the boards for over 2 years and I've learned many things; but No. 1: What is Stinger doing? Check his website ... www.stinger-performance.com ... (I'll take 10% on anything he buys Stinger )
i just remembered. i was looking at a post on a forum. yes, it was about a wastegate. but i should run a light spring correct? ive always wondered why some ricers have a blow off valve that sounds like a baby chimp laughing. i learned that, thats caused the blow off spring, being too stiff, and forcing air back out through the turbo backwards, which can destroy turbos. also, how much boost does a stock 2.3T out of a merkur produce?