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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications Just had AR downpipes installed on my 550i by LTBMW (SoCal)
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      08-02-2012, 12:09 AM   #1
Fantasm
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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.
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      08-02-2012, 02:12 PM   #2
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What no video?? Catted or Catless downpipes?

And I'm confused, you want to keep the 550i quiet because of uptight neighbors but you are having your Ferrari fitted with straight pipes??
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      08-02-2012, 03:08 PM   #3
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Awesome. I'd love to hear a clip, been debating this same upgrade for my personal F10.
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      08-02-2012, 05:00 PM   #4
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I never said I wanted to keep it quiet. I said that it WAS STILL quiet, and if you had uptight neighbors, you could still get the downpipes without any worries.

They are catless DP's.
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      08-02-2012, 05:15 PM   #5
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Will put up some videos tonight
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      08-02-2012, 06:08 PM   #6
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Quote:
Originally Posted by Fantasm View Post
Will put up some videos tonight
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      08-02-2012, 10:19 PM   #7
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Looking forward to listen to some sound clips!!
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      08-03-2012, 03:15 AM   #8
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Quote:
Originally Posted by Fantasm
I never said I wanted to keep it quiet. I said that it WAS STILL quiet, and if you had uptight neighbors, you could still get the downpipes without any worries.

They are catless DP's.
How's the smell given that they're catless?
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      08-03-2012, 12:27 PM   #9
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Nice! Vid would be cool.
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      08-03-2012, 03:08 PM   #10
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pics of your ferrari also! with Long and Ivan working on your Ferrari you know you have nothing to worry about! great guys to work with!
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      08-03-2012, 06:56 PM   #11
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Quote:
Originally Posted by SriRamJaiRam View Post
How's the smell given that they're catless?
Delicious and intoxicating?
Its the same smell my GTR had, and I don't mind it. Only smell it with windows down at a stop light anyways.

Vids delayed, will try and get some shot ASAP of some drive bys in the parking garage and on the street here in downtown LA at night.
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      08-03-2012, 07:03 PM   #12
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Actually, I have some in-car videos of it.
Will be more audible once I have the videos shot from exterior during drive-bys. Watch in 1080p



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      08-04-2012, 02:00 PM   #13
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Any codes with catless dp's ?
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      08-04-2012, 03:08 PM   #14
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No alerts received... but now that you mention it, I thought I would have a CEL due to no cats, but I don't... sooooooo....
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      08-05-2012, 11:31 AM   #15
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That's nice. Decided for any tune yet ?
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      08-05-2012, 06:53 PM   #16
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Wow is that turbo spooling I hear ??? And your completely stock exhaust besides downpipes ? Lol niceee
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      08-07-2012, 04:34 PM   #17
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My 550i got the CEL on AR catless downpipes.

Sound is amazing. I could say no increase in exhaust sound, but the whining of the turbos are more audible now. I actually been asked once if I had a supercharger on the car.

Love the whining sound.
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      08-13-2012, 12:16 AM   #18
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Love the sound
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      12-30-2012, 02:08 AM   #19
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Quote:
Originally Posted by Fantasm View Post
No alerts received... but now that you mention it, I thought I would have a CEL due to no cats, but I don't... sooooooo....
Nice. I have an Eisenmann Race on my car w/Dinan tune so wonder what that would sound like. My Eisenmann/Dinan doesn't give me any CEL's so hesitant if the AR downpipes would.

Also what wheels are those on your car? Very nice? Size/fitment?
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      06-13-2013, 09:12 PM   #20
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Still waiting when someone comes out with the CEL code blocker for the Catless DOwn pipes
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      06-14-2013, 01:40 AM   #21
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The jb4 will eliminate that cel code
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