Dyno Charts
Thread Starter
Pro
Joined: Dec 2005
Posts: 581
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From: New Jersey
Dyno Charts
Hey guys, I tried using search, but could not find any specific results...
I am looking to do exauhst and intake on my coupe, and I need some help.
No, this is not another, "which is the best" post.
I have gathered that these may vary, but I am not looking for specific results.
I am hoping that someone may have dyno charts that they can post for an A6 coupe with only exauhst and intake mods...the brands are not important as I am only looking for "averages". I am really interested in seeing what the LS2 is able to do when it can breathe.
Thank you very much for all your help!
-Joe
I am looking to do exauhst and intake on my coupe, and I need some help.
No, this is not another, "which is the best" post.
I have gathered that these may vary, but I am not looking for specific results.
I am hoping that someone may have dyno charts that they can post for an A6 coupe with only exauhst and intake mods...the brands are not important as I am only looking for "averages". I am really interested in seeing what the LS2 is able to do when it can breathe.
Thank you very much for all your help!
-Joe
Drifting
Joined: Jul 2005
Posts: 1,533
Likes: 0
From: az
Originally Posted by JAB210
Hey guys, I tried using search, but could not find any specific results...
I am looking to do exauhst and intake on my coupe, and I need some help.
No, this is not another, "which is the best" post.
I have gathered that these may vary, but I am not looking for specific results.
I am hoping that someone may have dyno charts that they can post for an A6 coupe with only exauhst and intake mods...the brands are not important as I am only looking for "averages". I am really interested in seeing what the LS2 is able to do when it can breathe.
you are looking at around 5hp for cat back and around 10 hp for intake give or take a couple here and there.
Thank you very much for all your help!
-Joe
I am looking to do exauhst and intake on my coupe, and I need some help.
No, this is not another, "which is the best" post.
I have gathered that these may vary, but I am not looking for specific results.
I am hoping that someone may have dyno charts that they can post for an A6 coupe with only exauhst and intake mods...the brands are not important as I am only looking for "averages". I am really interested in seeing what the LS2 is able to do when it can breathe.
you are looking at around 5hp for cat back and around 10 hp for intake give or take a couple here and there.
Thank you very much for all your help!
-Joe
Racer
Joined: Nov 2005
Posts: 293
Likes: 0
Yeah, he is right, after looking at about 20 dyno's of the vette club dyno day, the average increase at the tires with catback and intake was about 15whp. It didn't seem to matter wether it was a lingenfilter or k&n intake, or borla or corsa exhaust. They pretty much all made the same hp. Now these mods are important for better power with future modifications like long tubes, or small cam, heads and what not. So they still seem to be necessary in the long run!
Melting Slicks
Joined: Jun 2004
Posts: 3,439
Likes: 6
From: Newark, DE
St. Jude Donor '06
Intake (filter assy) and exhaust (cat-back) aren't going to be good for much, but they are still worth doing.
It will be very difficult to find and/or compare A6 dyno numbers.
1. Because there is no 1:1 gear ratio
2. Simply because it is so new
Here is what turned up in a forum search of the user gallery for "C6 dyno timeslips":
http://forums.corvetteforum.com/phot...what=allfields
It will be very difficult to find and/or compare A6 dyno numbers.
1. Because there is no 1:1 gear ratio
2. Simply because it is so new
Here is what turned up in a forum search of the user gallery for "C6 dyno timeslips":
http://forums.corvetteforum.com/phot...what=allfields
Drifting
Joined: Jan 2006
Posts: 1,560
Likes: 3
From: FNDA Beach Florida
Dyno Charts Conversion
Does anyone know what is the conversion of RWHP to HP at the crank. If the ad HP is 400 and the dyno says 330 RWHP and now I do add on's and the RWHP is 370, what is it at the crank now? There must be a formula or something.
Melting Slicks
Joined: Jun 2004
Posts: 3,439
Likes: 6
From: Newark, DE
St. Jude Donor '06
Originally Posted by gnatsum
Does anyone know what is the conversion of RWHP to HP at the crank.
It doesn't work that way. The loss through your transmission and drivetrain can be calculated an an aggregate percentage loss, based on two measurements. Empirically, it is fairly predictable within a +/- tolerance. However, you can't apply the percentage in reverse (based on a single measurement) to obtain bhp.Let's use nice round numbers as an example...
Say you measured 100 bhp and 90 rwhp. The net drivetrain loss would be 10%, agreed? But if you add 10% to that 90, you won't have your starting number (100), but rather, 99.
Melting Slicks
Joined: Feb 2005
Posts: 3,372
Likes: 0
From: Springfield VA,
The figures below are approximate since you can't be sure your car was making 400hp at the crank (could easily be (+) or (-) 10 hp.
I am by no means a math major but here goes. Divide the 330 by 400 and that will show you the percentage of the 400hp at the crank that is making it to the rear wheels. In your case 82.5 % so you are losing about 17.5% through the drivetrain. You would have to be making 448.5 Hp at the crank to achieve 370 hp at the wheels with a 17.5% drivetrain lose.
330/400 = .825 (% of power to the rear wheels)
so
400 = 330/.825
X = 370/.825
X = 448.5 hp
I am by no means a math major but here goes. Divide the 330 by 400 and that will show you the percentage of the 400hp at the crank that is making it to the rear wheels. In your case 82.5 % so you are losing about 17.5% through the drivetrain. You would have to be making 448.5 Hp at the crank to achieve 370 hp at the wheels with a 17.5% drivetrain lose.
330/400 = .825 (% of power to the rear wheels)
so
400 = 330/.825
X = 370/.825
X = 448.5 hp
Last edited by Jagcvette; Feb 2, 2006 at 12:34 AM.
