Gas smell with Downpipes

[Trevorstein]

Originally Posted by sna66

no I park in the driveway, I started the car this morning, and I can definitely smell it on cold start. i dont smell it while driving though, even with the top down.

That's because you're in motion. The exhaust is behind you!

3 Pages... ?!?

[Magic M4]

I have catless downpipes and didn’t smell anything, a week ago I added midpipes, at idle you can smell the exhaust fumes pretty badly, while standing at lights or in traffic if the windows are down it also smells bad. Today I noticed when I turned the ac on I could slightly smell the fumes again. I’ll
Be taking the car for a 600 mile trip this weekend hoping to see if there are any changes if not I am putting the oem midpipe back on.

[sna66]

Originally Posted by Trevorstein

That's because you're in motion. The exhaust is behind you!

3 Pages... ?!?

Thx captain, I only mention it because ppl with F83s have mentioned the smell with the top down at a light

[bmwmike335]

It's not that bad you get used to it. You feel like you're driving a real enthusiast car rather than these quiet little M cars, sometimes it gets pretty bad but usually if the car is idling and you're outside. Inside the cabin isn't that bad. The smell should be least of your issues when going catless, it's the check engine light, illegal factor, and not passing smog that's more of a regular concern. With that said, I highly recommend!! 😂👍🏼😂👍🏼

[Redacre]

I've been catless for about 5 months now (still have stock midpipe/rear) and I've gotten complaints for noise, but not for smell. I am positive my neighbors wouldn't hesitate to make a complaint if it were obvious. The joys of living in San Francisco...

[Danlnyc88]

I've smelled my downpipes like twice and that was when the wind was blowing in the opposite direction.