i have the Greddy MX on my car..i belive the pipeing is close to 3in
i believe the piping on the greddy mx is 2.5in. since its made specifically for a mkiv normally aspirated, you'd probably get the most performance out of it.supraspeed01 said:My stock pipe is about 2.5 inches in diameter.
How does everyone like the performance of their Greddy MX? Does it seem to have the right size pipe for the NA?