apexi n1 front pipe

[mjjstang]

Hey I searched but couldnt find much about the apexi n1 down/frontpipe, I was thinking about it because at less than 200 its not a bad deal for a downpipe and a cat, I know a lot of you guys just use test pipes but, what do you think about these, Can you remove the cat or is it one piece where if the cat ever went then u need a whole new pipe, Also do you know the dimensions, is it 75 or 80mm, Thanks.

[boosteds14]

a test pipe does not come with it. it goes only to the cat. Look into the Trust one also, they are cheaper. Then get a test pipe and your set.

[mjjstang]

then what is that big bulge at the end of the apexi downpipe/front pipe,

Edit: just went to apexi.com and it says, "A'PEX Front Pipes replace the factory downpipe and catalytic converter and significantly improve exhaust flow."

So I dont hear about people buying these over just a regular DP plus a testpipe or cat, just wondering why they arent very popular or what. And if I should just go the separate DP, cat/testpipe setup.