Looking to get my new custom exhaust next month but i have a few questions!
I'd like a turbo back exhaust system with a 100 cell race cat. I've seen people saying get 2.5" and 2.75" or something like that? Not clued on about this tbh, so what sizes should i be looking at and what does this mean?
Also, the car has 2 cats and i would like a 100 cell race cat. Apparently if i do this, it may cause too much air flow which results in failing MOT? Can someone please confirm this? If this is true, will i be better off with a 200 cell sports cat?
Just to note, car is already running Stage 1 map but looking to do Stage 2 in a few months.
Help appreciated people. Have a good day!