[james1138]

Originally Posted by drav23

I have a 23' m340 with mpe and the cg precision 1 dp, so very similar to the aa dp, if anything the cg is a bit louder than aa. Overall the combo sounds very nice, in sport is where you can really here the difference, and of course the cold start is louder for sure about 40% if I had to guess than compared to just MPE. The set up is loud when you want and sounds pretty calm in comfort.

Thanks! That sounds perfect. However I’m not too sure about the cold start. I’m not sure my neighbors love me with my MPE cold start as it is, 40% louder might be a little bit too much. I’ll give it some thought.

[Kenz]

Hi want to ask anyone has any experience of a reliable catted 200 cell downpipe that does not trigger CEL? On a stock m340 2023 lci. Not planning to femto, but thinking if there is any high flow DP that is worth trying.

[RCKYMTN M34OI]

Originally Posted by Kenz

Hi want to ask anyone has any experience of a reliable catted 200 cell downpipe that does not trigger CEL? On a stock m340 2023 lci. Not planning to femto, but thinking if there is any high flow DP that is worth trying.

This is your best bet.
https://x-ph.com/cg-precision-ds-1-h...npipe-bmw-b58/

[mike@x-ph.com]

Originally Posted by Kenz

Hi want to ask anyone has any experience of a reliable catted 200 cell downpipe that does not trigger CEL? On a stock m340 2023 lci. Not planning to femto, but thinking if there is any high flow DP that is worth trying.

i recommend the active autowerke catted downpipe, currently on sale

[Kenz]

Originally Posted by mike@x-ph.com

i recommend the active autowerke catted downpipe, currently on sale

Hi, but AA downpipe is only available for 400 cell ?

[mike@x-ph.com]

Originally Posted by Kenz

Hi, but AA downpipe is only available for 400 cell ?

yes the Active Autowerke downpipe is 400 CEL , just like the GESI downpipe

its rated at over 850 whp, so its more than enough flow for 99% of the B58 applications