Full straight pipe. Yay or nay?

[mother_russia]

your 100hp m20 wont make any more power with or without the cat anyway

I'm talking about in general.. Cats would make you lose a little bit of power, correct?

[lolcantturn]

your 100hp m20 wont make any more power with or without the cat anyway

[mother_russia]

Keep the cat.

Keep the cat.

Keep the cat.

M20's like to rasp above 4RPM with out the cat.

Do whatever else you'd like though to the exhaust +muffler, it will sound good to decent. Just keep the cat! You won't "lose" anything doing so.

How will I not lose anything if the cat restricts air?

[ak-]

Keep the cat.

Keep the cat.

Keep the cat.

M20's like to rasp above 4RPM with out the cat.

Do whatever else you'd like though to the exhaust +muffler, it will sound good to decent. Just keep the cat! You won't "lose" anything doing so.

[mother_russia]

So my 325i is almost ready to hit the road, and I'm debating on what to do.
I'm looking for your guys' opinions on why I should or shouldn't get it, and why?

If I do decide to go with a straight pipe, should I add a resonator or a catalytic converter?