Quote Originally Posted by Knestis View Post
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Just to be different, make the ENTIRE CLASS breath through the same size hole. Or use a spec muffler to restrict flow on that end.
K
In the Touring classes where Turbos are allowed (T2, T3), that's almost what we do. A TIR (turbo inlet restrictor) of a given size is specified to balance their performance against the non-turbo cars. (A TIR is similar to an SIR, but it installed in the turbo intake.)

Dave