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Old 05-12-2009, 11:44 AM   #71
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Quote:
Originally Posted by Crowley View Post
Don't you mean 14-15% for auto and 12% for manual .. no way there is 24-25 and 22% loss ..

Crowley
+1

exactly.

my C6 (possibly the most inefficient transmission in the world) and 9" rear end on my galaxy probably loses in the 20% range. No way a modern car does.
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Old 05-12-2009, 11:48 AM   #72
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Originally Posted by Matt TuneTime View Post
After dynoing many G8's the driveline loss is 24-25% for auto and 22% for manual .Nice Job guys ..
If thats true, then the major loss issue must be in the IRS no?

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Old 05-12-2009, 12:03 PM   #73
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It looks like the admin messed up and put 72rwhp instead of 45rwhp on the camaro5 homepage. Hopefully he/she will fix it.
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Old 05-12-2009, 12:05 PM   #74
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damn that sounded good n it had 21's so twenty's might have made a little more power?
wheels size has nothing to do with horse power
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Old 05-12-2009, 12:09 PM   #75
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Rotational mass(the weight of the wheels) only matters. It's like this. A 20lb 20'' aluminum wheel will produce more HP on the dyno than a 17'' 35lb wheel even though the 20'' is a larger size wheel. More wheel weight= more power used up to turn the wheels. This is the same concept as an aluminum driveshaft freeing up power because of it's lighter than stock weight.
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Old 05-12-2009, 12:19 PM   #76
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Can someone explain to me what I am hearing during the tests?

I Can hear the normal engine sound, but there is another sound which to me, reminds me of the VIPER START-UP Sound in the old Battlestar Galactica. Is there a blower or fan of some kind on this car? Could that be what I am hearing?
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Old 05-12-2009, 12:24 PM   #77
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everyone please read the threads from post #1 on down. half the comments on this thread are pointless. post #14 and #15 stated

Quote:
Originally Posted by mwilkes View Post
Hi, I made that video of the Fastlane Camaro... a couple of things to note...

1: I messed up the base Dyno and the initial numbers were not as low as the ones i posted. The car actually made 355 RWHP from the factory.

2: It did make hit the 400+ RWHP on the dyno, but the gains are not actually "+72 RWHP and +66 RWTQ" more like +45 RWHP and +40 RWTQ

Sorry for messing that up...
Quote:
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To answer other questions...
stripes are orange...
it's 2ss/rs
it's a six speed
yet there are 30+posts after talking about the car being an auto and wrong performance gains.
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Old 05-12-2009, 12:53 PM   #78
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Quote:
Originally Posted by 2Muchmark View Post
Can someone explain to me what I am hearing during the tests?

I Can hear the normal engine sound, but there is another sound which to me, reminds me of the VIPER START-UP Sound in the old Battlestar Galactica. Is there a blower or fan of some kind on this car? Could that be what I am hearing?
nope..what your hearing is the tires on the drums of the dyno..you will hear it no matter what car you may have up there
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Old 05-12-2009, 12:54 PM   #79
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Quote:
Originally Posted by 2Muchmark View Post
Can someone explain to me what I am hearing during the tests?

I Can hear the normal engine sound, but there is another sound which to me, reminds me of the VIPER START-UP Sound in the old Battlestar Galactica. Is there a blower or fan of some kind on this car? Could that be what I am hearing?
I noticed that too. My best guess was that it's the roller on the dyno. Someone please correct me if I'm wrong though.

EDIT: And I type too slow because someone else beat me to it^^^

Last edited by The Riz; 05-12-2009 at 12:56 PM. Reason: Too slow....
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Old 05-12-2009, 01:15 PM   #80
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Question

Wait.... Maybe I'm not getting it. On a 426HP car, you are only getting 355RWHP???? Is that correct?
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Old 05-12-2009, 01:30 PM   #81
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the engine produces 426hp, but you lose some hp getting it to the wheels.
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Old 05-12-2009, 01:46 PM   #82
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On a 426 HP car you're getting approximately 362 to the wheels based on the 15% drivetrain loss equation. The fastlane car dynoed lower than 362 because the weather was 85-90 degrees. I say this because dyno was most likely done 2 or so weeks ago, and I live in Houston, and the temps were up there close to 90 at the time.
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Old 05-12-2009, 02:03 PM   #83
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wouldn't their building be air conditioned? that drive train loss equation isn't 100% accurate. therefore i believe your 362 result compared to the 355 actual result are correct.
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Old 05-12-2009, 02:04 PM   #84
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i would like to know the difference with only the cold air intake.
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