is there much to be had from de-cat?. Wild claims of 40+whp but i find that hard to believe. I see a guy (allmotor_2000 I think) on the F10 forum saying cats are fine till 900bhp?
I am leaving in the primary cats due to smell and i dont need every last drop of power. Removing secondary for a bit more noise. OPF will be deleted as well.
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540i
GTR-R35, F90 M5, X3MC, RS3, RS7, M5, S7, S3, RS3, RS6, GTR R35, 996 Turbo, M5, RS6 V10, Cayenne Turbo S
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