Dyno numbers with and w/o RPI mods
11-25-2008, 09:14 PM
#21
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Originally Posted by Idonkare' post='731465' date='Nov 25 2008, 07:55 PM
Nice Results... 
What kind of transmission do you have leggo (i'm sure i missed it somewhere)?
What kind of transmission do you have leggo (i'm sure i missed it somewhere)?
11-26-2008, 01:21 AM
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Originally Posted by r1racer' post='731457' date='Nov 25 2008, 06:48 PM
VERY NICE Al! Thanks for the call and I will get you the pricing soon for you know what.
Also, I will be selling the exhaust to everyone here on e60.net...so watch out for it in the classifieds
Also, I will be selling the exhaust to everyone here on e60.net...so watch out for it in the classifieds
11-26-2008, 02:00 AM
#24
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My Ride: 2008 BMW 550i Silver Metallic w/Sport Automatic Transmission, Ventilated Comfort Seats in Beige Nasca Leather, Light Poplar Trim, NAV, HUD, Active Steering, Night Vision, Active Cruise Control, Logic 7, Blue tooth Hands Free, Dynamic Stability, Soft Close.
Mods: RPI Exhaust, Scoop + FIlter, License plate LED lights
Just ordered the RPI scoop + BMC filter from Nerweezy! Thanks for all the help
for trinity
for trinity
11-26-2008, 02:33 AM
#26
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My Ride: 2008 BMW 550i Titanium Silver Metallic Automatic Transmission, Ventilated Comfort Seats in Beige Nasca Leather, Light Popular Trim, NAV, HUD, Active Steering, Night Vision, Cruise Control, Logic 7, Blue tooth Hands Free, Dynamic Stability, Soft Close, Heated Steering wheel, Dynamic Drive, Voice commands
Originally Posted by NeRwEEzy' post='731810' date='Nov 26 2008, 06:02 AM
its a pleasure Asad. safe trip for your brother in December 
07-18-2009, 12:59 AM
#27
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Why is your stock dyno figure so low?
Originally Posted by leggomysakyo' post='731313' date='Nov 25 2008, 06:57 PM
Now please keep in mind that my 2004 530i is underpowered to start with.... I know, please don't remind me that I shoulda bought the 545i 
, but with that said. RPI's scoop and new exhaust have given me a little something to smile about!
Thanks Eloy and Joe from RPI! Joe, please feel free to chime in with and explanation of the numbers, as I have absolutely no idea what I'm talking about.
I will say that I can "feel" a difference in power during hard acceleration.. I guess my "butt dyno" wasn't lying to me!
Bone Stock
Stock vs. w/RPI scoop
Stock vs. RPI exhaust
The only thing that we didn't do was dyno it with both the scoop and exhaust together.
, but with that said. RPI's scoop and new exhaust have given me a little something to smile about! Thanks Eloy and Joe from RPI! Joe, please feel free to chime in with and explanation of the numbers, as I have absolutely no idea what I'm talking about.
I will say that I can "feel" a difference in power during hard acceleration.. I guess my "butt dyno" wasn't lying to me!Bone Stock
Stock vs. w/RPI scoop
Stock vs. RPI exhaust
The only thing that we didn't do was dyno it with both the scoop and exhaust together.
07-18-2009, 01:16 AM
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Originally Posted by iluvboost' post='945672' date='Jul 18 2009, 01:59 AM
Why is your stock dyno figure so low?
the reason why the stock number seem low is because the dynomometer RPI uses is a dyno dynamics brand (which calculates wheel horse power).
other brands like dynojet calculate crank horse power, which is usually higher becuause they do not account for the drive train loss. I'm not sure what the exact formula to calculate for the dyno dynamics but you should add roughly 20% (199.8 CHP) to the base dyno and you will get the CHP. hope this helped
07-18-2009, 08:31 AM
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i see...but its damn bloody low...165hp for a 530i...a honda civic can take it..
Originally Posted by dbae1978' post='945677' date='Jul 18 2009, 05:16 AM
wow this thread came back from the dead LOL. Al your thread is alive
the reason why the stock number seem low is because the dynomometer RPI uses is a dyno dynamics brand (which calculates wheel horse power).
other brands like dynojet calculate crank horse power, which is usually higher becuause they do not account for the drive train loss. I'm not sure what the exact formula to calculate for the dyno dynamics but you should add roughly 20% (199.8 CHP) to the base dyno and you will get the CHP. hope this helped
the reason why the stock number seem low is because the dynomometer RPI uses is a dyno dynamics brand (which calculates wheel horse power).
other brands like dynojet calculate crank horse power, which is usually higher becuause they do not account for the drive train loss. I'm not sure what the exact formula to calculate for the dyno dynamics but you should add roughly 20% (199.8 CHP) to the base dyno and you will get the CHP. hope this helped
07-19-2009, 05:53 AM
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Originally Posted by dbae1978' post='945677' date='Jul 18 2009, 05:16 AM
wow this thread came back from the dead LOL. Al your thread is alive
the reason why the stock number seem low is because the dynomometer RPI uses is a dyno dynamics brand (which calculates wheel horse power).
other brands like dynojet calculate crank horse power, which is usually higher becuause they do not account for the drive train loss. I'm not sure what the exact formula to calculate for the dyno dynamics but you should add roughly 20% (199.8 CHP) to the base dyno and you will get the CHP. hope this helped
the reason why the stock number seem low is because the dynomometer RPI uses is a dyno dynamics brand (which calculates wheel horse power).
other brands like dynojet calculate crank horse power, which is usually higher becuause they do not account for the drive train loss. I'm not sure what the exact formula to calculate for the dyno dynamics but you should add roughly 20% (199.8 CHP) to the base dyno and you will get the CHP. hope this helped
In fact, DynoJets are typically HIGHER reading dynos than others. (Mustang Dyno's showing lower numbers.)
I'm a little curious as to why BMW would even put a 165 rwhp power plant in a heavy car. It doesn't make sense, especially given what you pay for the car in the first place.
Good gains from the mods, though. It's making me give serious consideration to the RPI scoops and some drop-ins for my M5.