got a blitz super sound dump valve for my 95 wrx now its not an exact fit i need a reducer does any body know where i might get one? what do yous think about these dump valves a lot of people seem to think the standard ones are better?

 

I've gone back to the standard, I tried a bailey dv12 and an hks ssqv but the standard one perfroms the best, if you want sound then it a aftermarket one, but i think the car pulls better standard,