Calling all LS2 A6 Dyno Sheet holders...
Thread Starter
Racer
Joined: May 2008
Posts: 463
Likes: 4
From: Park City, UT
Calling all LS2 A6 Dyno Sheet holders...
Hey Folks!
I've been trying to get a good idea of what a "bone stock" LS2 w/ A6 dynos so that I can get a decent idea of the paracitic loss % from the A6 driveline.
Why am I doing this when I own one myself? Partly, because I'm an idiot and didn't dyno my car before I started modding. :o And, partly because a single data point does not make fore a reasonable sample.
When doing my research here on the forums, I've found only a few posts referencing stock HP #s for the A6's and they were anywhere from 315rwhp to 340rwhp, but I never saw any real dyno sheets to correlate them to.
So here is my request, should you feel so inclined:
1) If you have an LS2 w/ an A6 and you have your "bone stock" dyno sheets, please post them.
2) If you provided your "bone stock" dyno sheet, please feel free to provide your modded sheets as a comparo.
This way other folks that might be interested in doing your same mods will be able to see what potential results fthey might expect.
I'd post mine here but not only have I already done so in other forums and as I said above I'm an idiot and never dyno'd in "bone stock" condition.
I've been trying to get a good idea of what a "bone stock" LS2 w/ A6 dynos so that I can get a decent idea of the paracitic loss % from the A6 driveline.
Why am I doing this when I own one myself? Partly, because I'm an idiot and didn't dyno my car before I started modding. :o And, partly because a single data point does not make fore a reasonable sample.
When doing my research here on the forums, I've found only a few posts referencing stock HP #s for the A6's and they were anywhere from 315rwhp to 340rwhp, but I never saw any real dyno sheets to correlate them to.
So here is my request, should you feel so inclined:
1) If you have an LS2 w/ an A6 and you have your "bone stock" dyno sheets, please post them.
2) If you provided your "bone stock" dyno sheet, please feel free to provide your modded sheets as a comparo.
This way other folks that might be interested in doing your same mods will be able to see what potential results fthey might expect.
I'd post mine here but not only have I already done so in other forums and as I said above I'm an idiot and never dyno'd in "bone stock" condition.
Burning Brakes
Joined: Mar 2006
Posts: 946
Likes: 0
From: Midland, TX........ 550 RWHP/520 RWTQ (A6)
I can't find my stock dyno, but my car made 335 rwhp (bone stock). I've seen several A6 cars run on a Dynojet....this is pretty much the average.
As far as drivetrain loss.....be prepared for a heated discussion. There may not be an exact formula, but I can tell you what I've seen. A6=17% loss MN6=12%
loss I have seen several LS2 ENGINE dyno sheets
(NA and supercharged) then compared the later Dynojet rear wheel numbers (A6 and MN6) These losses seem to hold pretty true.
As far as drivetrain loss.....be prepared for a heated discussion. There may not be an exact formula, but I can tell you what I've seen. A6=17% loss MN6=12%
loss I have seen several LS2 ENGINE dyno sheets
(NA and supercharged) then compared the later Dynojet rear wheel numbers (A6 and MN6) These losses seem to hold pretty true.
Drifting
Joined: Jul 2005
Posts: 1,969
Likes: 8
From: NJ
I told ya. Ya made 20 more rwhp and better than that through out the band. What, you don't believe my super calibrated eyeball dyno with seat o the pants adaptor? You have the special AintQik FAST manifold. Its like the highlander, there can only be one 
By the way, you need to stop by and check out the giant shiny thing bolted to the front of my motor.
As far as % lost... that is indeed going to be a heated debate. One of the things I've noticed, is that with a higher horsepower car, the % doesn't really hold true. Is seems once you break 550 rwhp or so the loss becomes almost standard. My car made 520. So, at the motor it was making 582. At 750rwhp the motor is not making 840. There seems to be a point where it just loses around 40~50 rwhp and the percent loses accuracy.
Don't sweat the numbers. The stuff we are going to hook you up with is proven. I wouldn't steer ya wrong.
By the way, you need to stop by and check out the giant shiny thing bolted to the front of my motor.
As far as % lost... that is indeed going to be a heated debate. One of the things I've noticed, is that with a higher horsepower car, the % doesn't really hold true. Is seems once you break 550 rwhp or so the loss becomes almost standard. My car made 520. So, at the motor it was making 582. At 750rwhp the motor is not making 840. There seems to be a point where it just loses around 40~50 rwhp and the percent loses accuracy.
Don't sweat the numbers. The stuff we are going to hook you up with is proven. I wouldn't steer ya wrong.
Team Owner
Joined: Nov 2006
Posts: 21,136
Likes: 212
From: Long Island New York
Sorry cant find my print out right now. 345 totally stock and 362 after LPE intake,LG Pro's, Vette Dr tune. 17 hp on the top end but 35-40 increase in the heart of the powerband.Tq increases similar but forgot actual #'s.
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Thread Starter
Racer
Joined: May 2008
Posts: 463
Likes: 4
From: Park City, UT
Wow! Thanks guys! Keep the stock and modded numbers coming!
Looks like so far the stock HP#'s are ranging from 328 to 345 and TQ#'s are ranging from 317 to 341 at the rear wheels.
As AintQik illuded to, I'm not just interested in what the stock numbers were but rather using them and the modded #'s to determine if:
a) There is a standard % lost due to driveline
-or-
b) There is a standard # of HP/TQ lost due to friction from the A6 driveline
Heck, I know whatever magic AintQik and SpinMonster work on my car I'll be happy with! Interestingly enough, we never discussed my theory prior to his post. He must be smart or somethin'.
My guess was that due to a relatively constant amount of friction within the driveline, once that friction is overcome all future mods might result in a relatively linear increase in hp/tq #'s vice a percentile of the total generated at the crank. And, it seems that AintQik has seen these results (at least to some degree) in the real world.
Right now it's more of a very rough theory and there's a very good chance there's no way to definitively answer the question. That is unless it were possible to compare a single A6 LS2 with and without the associated mods (e.g. CAI, FAST, Headers, etc.) both at the crank and at the rear wheels.
Again, please keep those stock and modded #'s coming. I'll do the same with mine as future mods are added by AintQik and SpinMonster!
BTW, my AintQik ported and SpinMonster FAST install resulted in 350HP/360TQ @ the wheels. Thanks again guys!
Here's a bit of the methodology for those who are interested...
If we assume the mean HP and TQ numbers of 336.5 and 328.5 respectively are an accurate sampling (and we can not without more data points) that's about a 15.8% (or 63.5 HP) loss in HP and 17.8% (or 71.5 lb-ft) loss in TQ due to driveline friction. If I gained 13.5 peak RWHP and 31.5 peak RWTQ from the mean values (which is higly suspect due to my lack of initial data) then we can start to work out the answer to the question.
In reality, we'll need to use many more data points to get a good sample before we can really determine if we even have a shot of answering the question.
Once we've collected some more data, and I get some time to work the numbers (and hopefully figure out a way to extrapolate the % v.s. friction theory) I hope to provide you all with the findings (if they turn out to be at all relavent).
Yes, I"m a bit of a science geek. Yes I like to know exactly how things work. And, no I don't believe anything I read on the interweb without testing and evaluating the data.
More to follow...
Looks like so far the stock HP#'s are ranging from 328 to 345 and TQ#'s are ranging from 317 to 341 at the rear wheels.
As AintQik illuded to, I'm not just interested in what the stock numbers were but rather using them and the modded #'s to determine if:
a) There is a standard % lost due to driveline
-or-
b) There is a standard # of HP/TQ lost due to friction from the A6 driveline
Heck, I know whatever magic AintQik and SpinMonster work on my car I'll be happy with! Interestingly enough, we never discussed my theory prior to his post. He must be smart or somethin'.
My guess was that due to a relatively constant amount of friction within the driveline, once that friction is overcome all future mods might result in a relatively linear increase in hp/tq #'s vice a percentile of the total generated at the crank. And, it seems that AintQik has seen these results (at least to some degree) in the real world.
Right now it's more of a very rough theory and there's a very good chance there's no way to definitively answer the question. That is unless it were possible to compare a single A6 LS2 with and without the associated mods (e.g. CAI, FAST, Headers, etc.) both at the crank and at the rear wheels.
Again, please keep those stock and modded #'s coming. I'll do the same with mine as future mods are added by AintQik and SpinMonster!
BTW, my AintQik ported and SpinMonster FAST install resulted in 350HP/360TQ @ the wheels. Thanks again guys!
Here's a bit of the methodology for those who are interested...
If we assume the mean HP and TQ numbers of 336.5 and 328.5 respectively are an accurate sampling (and we can not without more data points) that's about a 15.8% (or 63.5 HP) loss in HP and 17.8% (or 71.5 lb-ft) loss in TQ due to driveline friction. If I gained 13.5 peak RWHP and 31.5 peak RWTQ from the mean values (which is higly suspect due to my lack of initial data) then we can start to work out the answer to the question.
In reality, we'll need to use many more data points to get a good sample before we can really determine if we even have a shot of answering the question.
Once we've collected some more data, and I get some time to work the numbers (and hopefully figure out a way to extrapolate the % v.s. friction theory) I hope to provide you all with the findings (if they turn out to be at all relavent).
Yes, I"m a bit of a science geek. Yes I like to know exactly how things work. And, no I don't believe anything I read on the interweb without testing and evaluating the data.
More to follow...
