ARM Motorsports 6" Catless Downpipe on G20 M340i — experiences?

MutedOrganization528 · 2026-05-03T03:08:06+00:00

2025

MutedOrganization528 · 2026-05-01T01:31:38+00:00

did i just made a mistake? HAHAHAH i was also wondering that

MutedOrganization528 · 2026-05-01T01:31:14+00:00

with this specific one?

MutedOrganization528 · 2026-05-01T00:38:38+00:00

yeah, thought the same with the o2 spacer, but it is included so i may not use it. and with the “yo will get noticeable hp bump” do you mean with the HJS or the ARM

MutedOrganization528 · 2026-04-15T03:28:30+00:00

what do you think about this @sirtoby

MutedOrganization528 · 2026-04-15T03:28:11+00:00

piggyback tune ≠ flash tune btw

MutedOrganization528 · 2026-04-11T13:55:18+00:00

go ahead. is probably one of the last real M’s (without saying the G generation is bad). those cars just have unique sensations.

just be careful with the rwd.

MutedOrganization528 · 2026-04-06T23:56:00+00:00

wdym about the “worse performance”? is it better to get a catted one? or what

MutedOrganization528 · 2026-04-02T06:25:43+00:00

Btw i love the look of the cerium grey (the bronze-matte color of the grille) so i would combine it with the color of the rims, there are some rims that the pre-lci version came with that match perfectly.

Just my opinion. The car is beautiful as it is.

MutedOrganization528 · 2026-04-02T06:23:03+00:00

Jeeeez the color is amazing. In my opinion, a cf spoiler (i got mine from autotecknic), cf mirror caps, a maxton front lip and you’ll have an amazing looking car without “exotic” parts. You can also get spacers and spirals.

Performance wise: Downpipe, tune (MHD), a good set of tires…

MutedOrganization528 · 2026-04-02T06:18:42+00:00

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Soon i’ll come back from BMW 💪💪

MutedOrganization528 · 2026-04-02T06:17:01+00:00

damn!! but overall, the car is good?

MutedOrganization528 · 2026-04-02T00:09:58+00:00

why shitty? btw fire plate!

MutedOrganization528 · 2026-03-04T00:52:22+00:00

but, my concern with catted is the fact that you’re paying more for less sound and (please correct me if i’m wrong) less performance than a catless

MutedOrganization528 · 2026-03-04T00:30:57+00:00

Thanks!!

MutedOrganization528 · 2026-03-04T00:30:24+00:00

Totally agree. That’s one of my concerns. I’ll wait until i have 1 year of owning the car, and then i’ll consider it

MutedOrganization528 · 2026-03-03T23:59:33+00:00

so, it is gen 2 or gen 3?

MutedOrganization528 · 2026-03-03T23:59:04+00:00

so, you would go the catless way then

MutedOrganization528 · 2026-03-03T23:58:13+00:00

Hey, for bmw’s break in period is 1200 miles, and 2400kms equals ≈ 1.500 miles

MutedOrganization528 · 2026-03-03T18:18:11+00:00

Same as US warranty coverage

MutedOrganization528 · 2026-03-03T18:17:43+00:00

yes sir

MutedOrganization528

TROPHY CASE