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      01-30-2018, 04:00 PM   #2
wassy4
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Drives: 2016 340i
Join Date: Feb 2017
Location: Orlando

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Quote:
Originally Posted by Jerich0 View Post
Looking to add a downpipe to the b58... what's the concensus here? Too raspy? Or sounds great?

What about power? Heard there are cels will a spacer 100% fix this?

Also read a bit on throttle closure... will this happen?

Generally I am just looking for better performance and do not plan to tune the car...

Thanks!
JC
To answer your questions:

Sounds great, can be considered raspy with a full exhaust if you're sensitive to that stuff. I think it sounds nice with just a downpipe. A full exhaust is a different beast altogether.

For power, if you don't plan on tuning then don't waste your time with a downpipe. You're not going to notice much aside from throttle response and a deeper note/louder burbles. If you were going to tune then I would say a downpipe is 100% worth it.

CEL can be fixed by a spacer, it does work.

No throttle closures unless you're hitting the fuel limit, which you won't without a tune.
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