All Things Mk5 > Performance Modifications

Is a sport cat legal?

<< < (4/4)

rcrisp11:

--- Quote from: colesey on May 21, 2018, 03:44:50 pm ---Precat is for German emissions testing which has a cold start requirement.

--- End quote ---

So yes?! Haha

rcrisp11:

--- Quote from: colesey on May 21, 2018, 03:44:50 pm ---Precat is for German emissions testing which has a cold start requirement.

--- End quote ---

So yes?! Haha

pudding:
Probably more for California emissions than Europe but a cat right next to the turbo, plus a second cat, is very common on most turbo cars.   First cat heats up way faster that way and the amount of fuel these engines burn, it needs 2 cats anyway to meet the very tough cal' emissions.

I noticed bugger all deleting the first cat.  It trims EGTs down a bit at the top end but in day-day driving there was nothing appreciable on the butt dyno.

rcrisp11:
Fair do’s. Thanks for the info :happy2:

Navigation

[0] Message Index

[*] Previous page