All Things Mk5 > Performance Modifications
Decat vs sport cat
Powervalve Nige:
The braided flex is the the smaller bore - the chainmail soft flex is far more flexible and has the greater through bore...
Cheers
Nige
pudding:
I use the APR cast downpipe with a GESI sports cat ($500 on it's own if sold separately!) and as Dan says, the cat is a pile of cack. If hot enough, it just about scrapes through the MOT at the pass limit of 0.1%. The pair of stock cats show 0.01% for reference.
Still, my local friendly dealer are happy to let it through and have done for 2 tests now. Lenient test stations is the key to running aftermarket exhausts!
I like the APR because being cast (and therefore much thicker wall thickness), it's very quiet and has a nice tone. Currently using the stock catback with it, so a good blend of daily refinement and performance.
shoaybmakda:
sorry to hijack the thread - but i was contemplating a milltek DP with a sports cat as i already have a milltek cat back - is adding a DP going to add any drone? i currently enjoy the sound it makes but wouldn't mind a little more rumble. my car isn't mapped to crazy numbers or i don't use it for track or anything but just slowly adding performance mods to my daily to keep things interesting in my car.
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