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Golf R downpipe on stock Alltrack

VdubAlltrack

Go Kart Newbie
Location
Usa

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TwinDad

Autocross Newbie
Location
Fort Lee, NJ
It is a larger diameter. That alone will help. I did a comparison of a catted 3" downpipe, the stock downpipe with the first cat gutted, and then a gti downpipe with the first cat gutted. I was jb4 and modified airbox for the only mods on e30. The stock with gutted first cat did not do as well as the 3". The gti downpipe with the first gutted performed just as well as the 3". The larger diameter does help. I've also heard that the first cat on the R/S3 flows better than the gti/golf do. No definite proof, but I've seen details that support it
 
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