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RPI GT Axle Back Exhaust Before/After - 550i MSport

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Old 04-16-2013, 09:22 AM
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Default RPI GT Axle Back Exhaust Before/After - 550i MSport

Coming from a Modded full exhaust with Corsa catback 09 CTSV (no drone) the bmw was just waaaayyyy too quiet.

Goal with all my cars is sleeper and a stock like look and driveability, just more insteresting, OEMPlus like.
Before showing stock fitment with Msport bumper.



Bought the exhaust from a forum member in WI. Excellent condition stock polished finish. Dropped it off for a gloss black powder coat at AZ custom coatings in Tempe, AZ. Bryan hooked me up at $150.
Great work, want to hang it on my wall in my office....



After....




Impressions are it does drone at low low rpm say 1500 rpm under load.
  • Highway crusing speeds no drone, very quiet.
  • Very mild exhaust.
  • Very deep, smooth sounding.
  • No vibrations or anything.
Being a german car I was hoping for more of a higher exotic, or bring out a fluttering type sound (VQ35) or something close to the CTSV with corsa.

Overall its a great daily driver, FK453 and the M suspension are just butter in the turns (why i went back to bmw), and great for baby haulin in a couple months (no alcantara).


Next I need to black out this ugly orange...suprised nobody has a cheap ebay gloss black vynl sticker to cover this??? (not bimmian tint)

Last edited by TTuned; 04-17-2013 at 07:47 AM.
Old 04-16-2013, 11:38 AM
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Originally Posted by TTuned
Next I need to black out this ugly orange...suprised nobody has a cheap ebay gloss black vynl sticker to cover this??? (not bimmian tint)
I'd pop them off and take them to a local paint shop.
Old 04-16-2013, 01:01 PM
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Originally Posted by west
I'd pop them off and take them to a local paint shop.
I wasnt sure if they are easily removable.
id just rattle can, with a clear coat. I just always think about if the next buyer wanted stock everything.
Old 04-17-2013, 07:50 AM
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added after pics
Old 04-17-2013, 09:18 AM
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looks good =) +1 for reflectors you can have a local body shop paint them.
Old 04-17-2013, 09:32 AM
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RPI exhaust looks great, nice work. For he reflectors, I had my tint guy vinyl them when he did my windows, cost me $20 extra.
Old 04-17-2013, 05:43 PM
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Looks smooth powder coated... I'm about to order this just been hesitant on pulling the trigger I was suppose to do an RPI a looong time ago. Did you buy it used since you said you got it from a forum member.
Old 04-19-2013, 11:55 AM
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My Ride: 2008 BMW E60 550i. Air scoops, black grille, M5 rear lip spoiler, AFE CIA stage 2, AFE throttle body spacer, RPI axel back GT exhaust, full replaced sound system including alpine amp, JL audio 12W3v3 sub, focal component speakers
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regarding the reflectors, i got mine tinted. looks way better
Old 04-22-2013, 06:15 AM
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Originally Posted by Quarta2six
Looks smooth powder coated... I'm about to order this just been hesitant on pulling the trigger I was suppose to do an RPI a looong time ago. Did you buy it used since you said you got it from a forum member.
Heck yea picked it up used in the classifieds. Thanks for all the options on the side markers.


I decided to go the easy route powder coat the 172 and do spacers. I don't want to wreck the ride going hella flush slammed on this project. Car rides so good as is.


Getting paint correction done in an hour . Paint has never been cared for properly by prev owner.
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