550i horsepower shortage
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Joined: Jan 2009
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From: Toronto
I had mine dynoed and it pulled 282 hp with 290 torque. I think that sounds about right. It is currently a stock 2007 550i....I hope it pulls more after I do a few simple mods. I will keep you guys posted.
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Joined: Jul 2008
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From: Dallas, Texas
My Ride: 2007 550i, Silver/Gray, Sport Package, Dinan Stage2 SW and Exhaust.
2008 535i, Black on Black, Sport Package, Loaded, Stock
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Previous: 1972 2002 Beige/Tan- Not as good as the 1600
Previous: 1968 1600 Black/Gray 4:10 rear end- a cheap blast!
Originally Posted by mistique_M3' post='826580' date='Mar 25 2009, 03:13 PM
I had mine dynoed and it pulled 282 hp with 290 torque. I think that sounds about right. It is currently a stock 2007 550i....I hope it pulls more after I do a few simple mods. I will keep you guys posted.
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Joined: Mar 2007
Posts: 1,517
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From: North Carolina, USA
My Ride: 2008 BMW 550i
2006 BMW X3
Originally Posted by rockfish' post='826213' date='Mar 25 2009, 10:36 AM
I just had my 550i dyno-ed prior installing the Dinan S2 SW and Exhaust. It only pulled 255hp at the wheels. The dealer grabbed another 550i off the lot and it pulled 278. These cars should be pulling 280+ at the wheel if they are getting 360 at the crank. Does anyone know who took my horsepower and what I need to do to get it back?
Also on the dyno chart, did it have a "normal" HP & Torque curve or did it have peak HP much lower than the 6300 RPMs it should?
Contributors
Joined: Jun 2007
Posts: 470
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From: Washington DC Suburb
My Ride: '07 550i with SP, Nav, Logic7
Just got my car dynoed today using Mustang Dyno, I understand Mustang Dyno number tends to be a bit lower than Dynojet. Here is the result:
1st run: 289.8 HP/313.9 lb-ft
2nd run: 289.2 HP/297.4 lb-ft
3rd run: 288.9 HP/301.2 lb-ft
I think the torque is lower in the last two runs because the engine is getting hot. Now I just need to get the scanner to work.
1st run: 289.8 HP/313.9 lb-ft
2nd run: 289.2 HP/297.4 lb-ft
3rd run: 288.9 HP/301.2 lb-ft
I think the torque is lower in the last two runs because the engine is getting hot. Now I just need to get the scanner to work.
Thread Starter
Members
Joined: Jul 2008
Posts: 7
Likes: 0
From: Dallas, Texas
My Ride: 2007 550i, Silver/Gray, Sport Package, Dinan Stage2 SW and Exhaust.
2008 535i, Black on Black, Sport Package, Loaded, Stock
Previous: 2009 M3 Blue/Light Gray- Still Missed Dearly
Previous: 1972 2002 Beige/Tan- Not as good as the 1600
Previous: 1968 1600 Black/Gray 4:10 rear end- a cheap blast!
Originally Posted by zen68' post='828458' date='Mar 27 2009, 03:14 PM
Just got my car dynoed today using Mustang Dyno, I understand Mustang Dyno number tends to be a bit lower than Dynojet. Here is the result:
1st run: 289.8 HP/313.9 lb-ft
2nd run: 289.2 HP/297.4 lb-ft
3rd run: 288.9 HP/301.2 lb-ft
I think the torque is lower in the last two runs because the engine is getting hot. Now I just need to get the scanner to work.
1st run: 289.8 HP/313.9 lb-ft
2nd run: 289.2 HP/297.4 lb-ft
3rd run: 288.9 HP/301.2 lb-ft
I think the torque is lower in the last two runs because the engine is getting hot. Now I just need to get the scanner to work.
Members
Joined: Feb 2009
Posts: 13
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From: AZ
My Ride: 04 545i
Originally Posted by zen68' post='828458' date='Mar 27 2009, 01:14 PM
Just got my car dynoed today using Mustang Dyno, I understand Mustang Dyno number tends to be a bit lower than Dynojet. Here is the result:
1st run: 289.8 HP/313.9 lb-ft
2nd run: 289.2 HP/297.4 lb-ft
3rd run: 288.9 HP/301.2 lb-ft
I think the torque is lower in the last two runs because the engine is getting hot. Now I just need to get the scanner to work.
1st run: 289.8 HP/313.9 lb-ft
2nd run: 289.2 HP/297.4 lb-ft
3rd run: 288.9 HP/301.2 lb-ft
I think the torque is lower in the last two runs because the engine is getting hot. Now I just need to get the scanner to work.
Is this stock?
Members
Joined: Sep 2008
Posts: 211
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From: Seattle, WA
wow, i guess anyone looking to buy a 550 should have the car properly dyno'ed before buying so your getting your money's worth...im looking to get an m5 but now im definately gonna have it dyno'ed before purchasing
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Joined: Dec 2008
Posts: 695
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From: San Antonio
Originally Posted by rockfish' post='826213' date='Mar 25 2009, 09:36 AM
I just had my 550i dyno-ed prior installing the Dinan S2 SW and Exhaust. It only pulled 255hp at the wheels. The dealer grabbed another 550i off the lot and it pulled 278. These cars should be pulling 280+ at the wheel if they are getting 360 at the crank. Does anyone know who took my horsepower and what I need to do to get it back?
Contributors
Joined: Jun 2007
Posts: 470
Likes: 0
From: Washington DC Suburb
My Ride: '07 550i with SP, Nav, Logic7
Originally Posted by bindoy' post='830600' date='Mar 30 2009, 12:24 PM
Is this stock?
Recently, my software was upgraded, it wiped out everything so I'm back to stock.
To be honest, the most noticeable gain was when I replaced the spark plugs at 41K miles.