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      08-02-2012, 01:09 AM   #1

Drives: SL63
Join Date: Mar 2009
Location: Orange County, CA

iTrader: (2)

Just had AR downpipes installed on my 550i by LTBMW (SoCal)

Definite power gains (didnt do before/after dyno tho).
Huge increase in turbo spool sound ...
Small increase in exhaust sound, no real change however, so still a sleeper and A-OK for uptight neighbor(hood)s.

Just DP's installed, no other change to the stock exhaust. So if you want DP's for power gain, and want to remain quiet... definitely go for it.
I may go for exhaust upgrade though to get louder.

Thanks go out to LTBMW for getting it done professionally.

LTBMW is great shop to work with in SoCal for TONS of shit.

- body paint
- wheel refinishing / painting / mounting
- car wraps
- clear bras
- paint correction / details
- exhaust
- custom body work (metal / fiberglass)
- reflector fills and paint to match
- full on engine hardware upgrades
- ecu tunes

They get shit done so I'm giving them props.
Going to drop off my Ferrari 458 to have them work on lowering it and doing straight pipe exhaust and ecu tune.
NOW: 2011 Ferrari 458, 2014 BMW M5 w/ CompPack, 2014 BMW X1, 2005 BMW M3 with Gintani SC&Meth, 2008 Ducati 1098
BEFORE: 24+ Other Awesome Cars - BYE - My Straight Piped Ferrari 458 (plus other mods):