Exhaust on 550i
07-31-2009, 01:21 PM
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I dont think you'll lose significant power. Just make sure you dont go over the same diameter your stock exhaust has. Also make sure you to get an X-pipe installed.
07-31-2009, 01:46 PM
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My Ride: 2011.5 Alpine White E90 M3 | Black Novillo Leather | Carbon Fiber Leather Trim | ZCP | ZP2 | M-DCT | Navigation | Moonroof | 6FL Mods: TMS 12.5mm spacers all around l Hawk HPS Brake Pads l OEM M3 Edition Grills l Paint Matched Side Gills l Key Hole D
Originally Posted by Speed_Force_E60' post='961355' date='Jul 31 2009, 02:21 PM
I dont think you'll lose significant power. Just make sure you dont go over the same diameter your stock exhaust has. Also make sure you to get an X-pipe installed.
https://5series.net/forums/index.php?showtopic=75182
07-31-2009, 01:50 PM
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Originally Posted by GENEaTALS' post='961388' date='Jul 31 2009, 02:46 PM
My mistake, it was 12 HP over the mangaflow. i was reading the torque curve instead of the hp curve!
07-31-2009, 01:54 PM
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My Ride: 2011.5 Alpine White E90 M3 | Black Novillo Leather | Carbon Fiber Leather Trim | ZCP | ZP2 | M-DCT | Navigation | Moonroof | 6FL Mods: TMS 12.5mm spacers all around l Hawk HPS Brake Pads l OEM M3 Edition Grills l Paint Matched Side Gills l Key Hole D
Originally Posted by dbae1978' post='961392' date='Jul 31 2009, 02:50 PM
that's 5 to 8 hp more than the magnaflow!
07-31-2009, 02:01 PM
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Originally Posted by Speed_Force_E60' post='961412' date='Jul 31 2009, 03:01 PM
So the RPI gained 5 to 8 hp? or did the Magnaflow just lose 5 to 8?
07-31-2009, 02:05 PM
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Originally Posted by Speed_Force_E60' post='961415' date='Jul 31 2009, 03:03 PM
That's a nice gain right there. 
The actual numbers are 12 -15 hp over the magnaflow