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If you want to mount it on the ST-Line version you must remove the spoiler from the ST / ST-Line version and mount the one from the standard version **
and it was an instant success
The larger 1
8bhp increase in horsepower
Airtec Motorsport De-cat Downpipe for Bmw S63 Engine (M5/m6) Mustang If you want to mountTECHNICAL DATA AIRTEC Motorsport De Cat Downpipes for BMW S63B44TU engine (M5 M6) By removing the original restrictive catalytic converters located within the factory OEM downpipes, back pressure is hugely reduced, which in return means faster response, increased power and a more aggressive exhaust note. One of the only manufacturers that offer a cast elbow to retain diameter! Features: Made from stainless steel AIRTEC laser cut plaque Smooth bends to
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