M157 Bi-Turbo ECU Tune Sale
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Joined: Aug 2006
Posts: 4,909
Likes: 130
From: Houston
C63S
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Joined: Jun 2008
Posts: 17
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2012 CLS63 AMG pp, 2009 Silverado 2500HD Duramax
Ok, trying to understand the horsepower numbers here and I assume that the graph is rear wheel hp.
The car comes with a reported 518hp at the crank. If it really had 518hp, then your reading at the wheels of 465 would indicate a drivetrain loss of only 10%. If we take a "rule of thumb" drivetrain loss of 15% and apply that to the 465 reading, it indicates ~534hp at the crank. I have to assume Mercedes is under-rating their engine.
So the way I see it is that with 643hp at the wheel, this tune takes the crank hp to the 740hp range.
Have I made any wrong assumptions here?
The car comes with a reported 518hp at the crank. If it really had 518hp, then your reading at the wheels of 465 would indicate a drivetrain loss of only 10%. If we take a "rule of thumb" drivetrain loss of 15% and apply that to the 465 reading, it indicates ~534hp at the crank. I have to assume Mercedes is under-rating their engine.
So the way I see it is that with 643hp at the wheel, this tune takes the crank hp to the 740hp range.
Have I made any wrong assumptions here?
MBWorld Fanatic!
Joined: Jan 2007
Posts: 2,597
Likes: 19
From: Kuwait
CLS55 2006, CLS 63S 2015
Ok, trying to understand the horsepower numbers here and I assume that the graph is rear wheel hp.
The car comes with a reported 518hp at the crank. If it really had 518hp, then your reading at the wheels of 465 would indicate a drivetrain loss of only 10%. If we take a "rule of thumb" drivetrain loss of 15% and apply that to the 465 reading, it indicates ~534hp at the crank. I have to assume Mercedes is under-rating their engine.
So the way I see it is that with 643hp at the wheel, this tune takes the crank hp to the 740hp range.
Have I made any wrong assumptions here?
The car comes with a reported 518hp at the crank. If it really had 518hp, then your reading at the wheels of 465 would indicate a drivetrain loss of only 10%. If we take a "rule of thumb" drivetrain loss of 15% and apply that to the 465 reading, it indicates ~534hp at the crank. I have to assume Mercedes is under-rating their engine.
So the way I see it is that with 643hp at the wheel, this tune takes the crank hp to the 740hp range.
Have I made any wrong assumptions here?
Thread Starter
SPONSOR
Joined: Aug 2006
Posts: 4,909
Likes: 130
From: Houston
C63S
Hey all, I want to let you know that this sale is still up. Because of popular demand we have extended the sale. Call in or PM us with the phrase "Team Eurocharged" and get this discount. If anyone has any questions, go ahead and post them or PM us. We would be more than happy to help out to the best of our abilities.
Thank you all for your input and support! You can always reach us at 713-462-1600.
Thank you all for your input and support! You can always reach us at 713-462-1600.
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