Given the cost, anyone done Pre and Post draggy times to see if they actually make any difference??
So much rain in the uk i doubt I will go down this route but they do look and sound good.
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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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