Anybody tried this? Sec-1 with cats and resonators

[Slideways]

I was curious about that myself. Maybe just packaging constraints. The stock euro cats won't fit up at the front end, and they may be the smallest ones that will met Euro emissions requirements.

Our emissions laws are a lot more stringent than most of the rest of the world. The US cats are built into the headers because they need to be that close to meet CAFE standards.

http://www.unofficialbmw.com/images/BMW_M3_Exhaust_System.pdf

There is great documentation on this stuff.

[1000hp]

http://www.unofficialbmw.com/images/BMW_M3_Exhaust_System.pdf

There is great documentation on this stuff.

Awesome. Nice to see detailed technical info like that from a manufacturer.

And that backs up everything I just said 😆. Occasionally I am right about something.

[Bob Sacamano]

I wonder how long cheap cats like these are good for. All I really care about is the smell.

[1000hp]

I wonder how long cheap cats like these are good for. All I really care about is the smell.

I haven't used Flowmaster cats before, so fingers crossed they don't crumble apart in six months.

I've used PLM cats before, and they are still working fine on that car after ~3 years.

I'm doing the work myself, so these cheap cats would have to fail six times before I spent what gesi cats would have cost me. But if you're paying someone else to do it, it might be worth spending the money on the high dollar ones (assuming they'll fit).

[maupineda]

Willing to sell a section 1 I had gotten but have decided against. Hit me up if anyone is interested.

i will create a new FS post soon

[T3amfish]

I made my own section 1 with the stock section 1 and I welded in 2.25” 200 cell cats. I made a jig so I would have stock dimensions