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02-09-2014, 05:53 PM | #1 |
Scooby Newbie
Member#: 380119
Join Date: Jan 2014
Chapter/Region:
SWIC
Location: Yuma
Vehicle:2008 Sti Blue |
First Tune Ever!
Went to dyno comp in scottsdale and have them install a Tsudo Catless DP to match my Tsudo S2 Catback and AEM CAI. End results are...
300 Tq and 275 Hp at the wheel. So 405 Tq and 371 Hp at the crank. Video
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02-09-2014, 08:51 PM | #2 |
Scooby Specialist
Member#: 157029
Join Date: Aug 2007
Chapter/Region:
SCIC
Location: Los Angeles
Vehicle:'13 Mazdaspeed3 |
275/300 at the wheels is a little low for a stage 2 STi, but solid numbers nonetheless.
Also, be careful throwing around those crank horsepower numbers you calculated, you'll have some big shoes to fill once you say you drive a 370hp STi, because most guys that know about modded cars are going to assume whp numbers. Being the owner of a 280whp speed3, I think I'd about die laughing if I were at the 1/4mile and was trapping the same speeds as the guy saying he had a 370hp sti. I always quote whp numbers if anyone asks about my car. |
02-09-2014, 09:41 PM | #3 |
Scooby Specialist
Member#: 305107
Join Date: Dec 2011
Chapter/Region:
Tri-State
Location: Long Island, NY
Vehicle:2016 GT 5.OHH DIB |
how the hell did you calculate those crank #s? lol
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02-09-2014, 10:35 PM | #4 |
Scooby Newbie
Member#: 125349
Join Date: Sep 2006
Chapter/Region:
TXIC
Location: Houston, Texas
Vehicle:2014 WRX STi World Rally Blue |
Did you do a baseline on the same dyno before? Im curious to see the increases on the same model dyno.
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02-10-2014, 12:27 AM | #5 |
Scooby Newbie
Member#: 380119
Join Date: Jan 2014
Chapter/Region:
SWIC
Location: Yuma
Vehicle:2008 Sti Blue |
I posted "crank" numbers to see what you guys thought. calculated those numbers from what dyno comp said to use. They said take wheel numbers and multiply by 1.35. I'm not sure on the method, they claim the awd dyno setup has a 35% loss factor. But I'm just doing what they said. What numbers should I be seeing? If there's a better way calculate crank numbers I'm open. Unfortunately I did not do a baseline.
Last edited by nonameasian; 02-10-2014 at 12:33 AM. |
02-10-2014, 12:03 PM | #6 |
Scooby Guru
Member#: 103232
Join Date: Dec 2005
Chapter/Region:
Tri-State
Location: GTX3576R 05GD, GTX3076R'd FXT
Vehicle:GTX 3071R'd 11WRX PPG,4.44,LSD,E85,6spdx3 |
Actually about 20-25% loss...
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02-11-2014, 01:57 AM | #7 | |
Scooby Specialist
Member#: 157029
Join Date: Aug 2007
Chapter/Region:
SCIC
Location: Los Angeles
Vehicle:'13 Mazdaspeed3 |
Quote:
Multiplying by 1.35 doesn't mean they have a 35% loss factor. Most AWD cars will be around 20-25 percent as stated earlier. So just do WHP/(1-AWDLOSS). So in your case, take 275 divided by 1-.25. So 275/.75. Gives you about 366.6 crank hp. A 35% loss (which is way too high) would be 275/.65, which comes out to 423. Sorry, you don't have a 423 hp car though. If you need proof of that, find a 425hp camaro SS that's stock and weighs at least 500 lbs more than your car. It'll put bus-lengths on you on the freeway. |
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02-11-2014, 04:43 AM | #8 | |
Scooby Newbie
Member#: 380119
Join Date: Jan 2014
Chapter/Region:
SWIC
Location: Yuma
Vehicle:2008 Sti Blue |
Quote:
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02-11-2014, 01:48 PM | #9 | |
Scooby Specialist
Member#: 323379
Join Date: Jun 2012
Vehicle:1992 Trans Am |
Quote:
1. There's no exact number since you're guessing. 2. The outcome will NEVER matter and crank numbers are utterly pointless and used by the ignorant or marketers anyway. |
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02-11-2014, 01:51 PM | #10 |
Scooby Newbie
Member#: 380119
Join Date: Jan 2014
Chapter/Region:
SWIC
Location: Yuma
Vehicle:2008 Sti Blue |
fair enough. thanks for all the input guys
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02-11-2014, 06:46 PM | #11 |
Scooby Specialist
Member#: 127099
Join Date: Sep 2006
Chapter/Region:
BAIC
Vehicle:02 IMPERZA WRX BLACK |
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