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      11-19-2020, 10:44 PM   #11
r33_RGSport
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Drives: G09 XM, G05 X5 40, 991.2 T
Join Date: Oct 2009
Location: So. Cal

iTrader: (6)

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Hey all

Have some great news to share - B58 downpipes are compatible with our cars!

I installed the CG DS-1 recently and it's fantastic. About 20-30% increase in volume.

https://g05.bimmerpost.com/forums/sh....php?t=1771926
Where can I buy the Downpipes and how difficult is the install?

Also, where did you buy the lowering springs and how is the ride quality? I have 20" wheels so really need the car dropped!
I have H&R spring and KW V3 in stock.
Downpipe, I would go with Evolution Racewerks or RushPlux.
How low can you go with the springs that you have and do either of the downpipes you mentioned guarantee a no CEL?
Rushplux guarantee no CEL.
I've tested it on my G30 540 a year ago.

H&R spring advertised at 1.4" drop for 40i.
I think KW V3 is about 1.6".
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