550i Project Journal
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Joined: Apr 2009
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From: Seattle
The 'after' run from the above dyno sheet will be used as the baseline for when we dyno the car tomorrow. Same dyno, different atmospheric conditions, but everything else mostly the same...well, except for the supercharger kit.
Here are a couple threads regarding the headers installation and dyno measurements for reference:
https://5series.net/forums/topic/107...st__p__1356181
https://5series.net/forums/topic/114...ts/page__st__0
Thread Starter
Senior Members
Joined: Apr 2009
Posts: 1,122
Likes: 3
From: Seattle
John gave the car his blessing today and we tossed it on his Dyno.
ESS claims that the supercharger will show 7PSI of boost on a stock 550i. We saw 4.5PSI on my 550i, but it had already been modded before installing the supercharger:
http://www.youtube.com/watch?v=y_ZXIjdVj28
Here is the dyno sheet showing the gains that 4.5PSI of boost made:
Can only wonder what will happen if we change the pulley out to recover that lost 2.5PSI.
For you video junkies, here's a video of the car on the dyno (appologies ahead of time as the car is extremely dirty):
http://www.youtube.com/watch?v=0PLFHhhx3-M
Overall I'm extremely pleased with the results even though we're only running partial boost. Working with John and Alex at CarbConnection is always a pleasure. Thanks John/Alex if you see this!
ESS claims that the supercharger will show 7PSI of boost on a stock 550i. We saw 4.5PSI on my 550i, but it had already been modded before installing the supercharger:
http://www.youtube.com/watch?v=y_ZXIjdVj28
Here is the dyno sheet showing the gains that 4.5PSI of boost made:
Can only wonder what will happen if we change the pulley out to recover that lost 2.5PSI.
For you video junkies, here's a video of the car on the dyno (appologies ahead of time as the car is extremely dirty):
http://www.youtube.com/watch?v=0PLFHhhx3-M
Overall I'm extremely pleased with the results even though we're only running partial boost. Working with John and Alex at CarbConnection is always a pleasure. Thanks John/Alex if you see this!
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Joined: May 2011
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From: San Antonio, TX
My Ride: 2006 550i sport pak. all the other goodies..
MODS: M5 front, sides, aFe throttle body spacer, RPI Red scoop, amber angle eyes, powder coated sport rims, tinted tail lights. smoked side blinkers, color of car and rims roundels, real carbon fiber roof spoiler, 550i number flat black, LED license plate lights, MTX 12' sub, dyno mat, tinted Windows, flat black grill, flat black exhaust tips, light smoke headlight tint, foged out eyelash, velocity booster.
thats dirty!! i want! 
Members
Joined: Apr 2012
Posts: 53
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From: Washington State
My Ride: 2007 550i fully loaded. MODS; RPi scoop and BMC filter upgrade with carbon filter delete. All LED interior, LED plate lights, R1 rotor and pad upgrade, Magnaflow cat back system.
Waiting to instal; AG F-10 rep wheels, LED sides and fogs.
Future MODS; Buy an M5!!
That is crazy sick!!! 
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Joined: Jul 2011
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From: houston tx
My Ride: 2008 550 sport with all the fixins, 07 yukon with all the fixins.
Good job and your car sounds pretty good. Expecially at the end of the video. I do think the change of the pully that lost power will be regained. What changes did you notice while driving it. Congrats.
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Joined: Aug 2008
Posts: 340
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From: Clarendon/Tysons Corner, VA
My Ride: See Signature
Model Year: 2015
Engine: N55
YES!! Glad everything worked out nicely and there were not any problems with the install. Congrats man and hopefully you can take more vids!! I'll try and do the same in the near future...