EVO VIII Dyno Result!
#31
Here's another good one if you're through with that. About how it's useless to compare numbers from different dyno's, and how shaddy part makers can manipulate the numbers.
http://www.vishnutuning.com/dynos_dont_lie.htm
http://www.vishnutuning.com/dynos_dont_lie.htm
#32
The stock WRX makes 165WHP. It would be sad if the same dyno that measured the claimed 195whp for the WRX also measured the whp for the EVO. If thats true, I bet the EVO really only has 200-210WHP. AWD cars lose ~30% HP in the drivetrain. Ask any VR4 owner, they lose even more. I pray the my Stage II WRX WON't be able to smoke a stock EVO, but its not looking very good.
#34
Originally posted by Ben
I figured somebody wouldn't believe me, because as you say it proves everybody else wrong. Well, everybody else just may be wrong. I never said the set HP loss was correct, just more correct. Read this, this guy knows his ****.
http://www.vishnutuning.com/dyno_myth.htm
I figured somebody wouldn't believe me, because as you say it proves everybody else wrong. Well, everybody else just may be wrong. I never said the set HP loss was correct, just more correct. Read this, this guy knows his ****.
http://www.vishnutuning.com/dyno_myth.htm
#35
Originally posted by WestSideBilly
Sorry, but Mr. Shiv S. Pathak doesn't know what he is talking about. Drivetrain losses typically stay fairly constant as a percentage, and the losses have little to do with heat (as it is merely a byproduct of friction in this case).
Sorry, but Mr. Shiv S. Pathak doesn't know what he is talking about. Drivetrain losses typically stay fairly constant as a percentage, and the losses have little to do with heat (as it is merely a byproduct of friction in this case).
Last edited by Ben; Jan 22, 2003 at 03:15 PM.
#36
Hp loss wheels to flywheel should always be used with %. The Evo has about 24% drivetrain loss..NOT a set hp loss.
Read this if you need clarification on why:
http://www.g-force-motorsport.co.uk/...detail%202.htm
Read this if you need clarification on why:
http://www.g-force-motorsport.co.uk/...detail%202.htm
#37
I would be very happy to see the US EVO going over 100 mph at the track. The best that I did with my car (which was several modifications and years ago) was 100.5 mph and happened in 13.41 sec. The car with me was about 3300 lb and HP calculator that can be found over the WEB, showed 275 HP at the wheels.
So, if US EVO brakes that 100 mph mark, I would be very happy!
Fedja
So, if US EVO brakes that 100 mph mark, I would be very happy!
Fedja
#40
Originally posted by broeli
Hp loss wheels to flywheel should always be used with %. The Evo has about 24% drivetrain loss..NOT a set hp loss.
Read this if you need clarification on why:
http://www.g-force-motorsport.co.uk/...detail%202.htm
Hp loss wheels to flywheel should always be used with %. The Evo has about 24% drivetrain loss..NOT a set hp loss.
Read this if you need clarification on why:
http://www.g-force-motorsport.co.uk/...detail%202.htm
#41
Originally posted by Ben
He's one of the best Subaru tuners in the USA and one of the technical writers for SCC. So far his credentials beat yours.
He's one of the best Subaru tuners in the USA and one of the technical writers for SCC. So far his credentials beat yours.
Now, I know that my credentials are also way off his, but it is up to you to believe in whatever you think is correct, not according to who wrote it!
Have a good one!!
Fedja
#42
Yes, and I do believe what he wrote. I've seen plenty of the work Shiv has done with the Impreza, and everything I've seen from him so far is accurate. He's actually one of the best WRX tuners in the world, getting 350hp with stock internals and pump gas was unheard of before the WRX came to the USA. Anyway, the lost power has to go somewhere, it doesn't just dissapear. It's going to be lost as heat. Is the heat going to increase so much as to account for the 35 extra hp lost in his double hp example? I'd agree with Shiv that no it wouldn't.
#43
Originally posted by Longfury
why don't we compare the Evo's wheel HP to the JDM Evo VII's Wheel HP???
why don't we compare the Evo's wheel HP to the JDM Evo VII's Wheel HP???
USDM Evo VIII rated 230 hp at the wheels. Around 300 hp at the flywheel maybe or 271 hp at the flywheel with less drivetrain loss or the dyno was wrong. Don't know.
#44
I don't know much about this but let me take a stab. I suck with cars this might be way off.
1) Theres the weight of the parts you have to move. This is a set weight, say its 10lb and that takes off ~30hp it will be 30hp at 500 crank hp and 30hp at 100 crank hp.
2) Now theres the friction involved. Say its 10% loss. It equals 10hp at 100 crank and 50hp at 500 crank.
So in the two examples. 100 crank loses about 40hp, and 500 crank looses 80hp. These numbers are way off, but i chose them as an example of what i believe happens.
Tell me if i'm way off.
1) Theres the weight of the parts you have to move. This is a set weight, say its 10lb and that takes off ~30hp it will be 30hp at 500 crank hp and 30hp at 100 crank hp.
2) Now theres the friction involved. Say its 10% loss. It equals 10hp at 100 crank and 50hp at 500 crank.
So in the two examples. 100 crank loses about 40hp, and 500 crank looses 80hp. These numbers are way off, but i chose them as an example of what i believe happens.
Tell me if i'm way off.
#45
Originally posted by Ben
Yes, and I do believe what he wrote. I've seen plenty of the work Shiv has done with the Impreza, and everything I've seen from him so far is accurate. He's actually one of the best WRX tuners in the world, getting 350hp with stock internals and pump gas was unheard of before the WRX came to the USA. Anyway, the lost power has to go somewhere, it doesn't just dissapear. It's going to be lost as heat. Is the heat going to increase so much as to account for the 35 extra hp lost in his double hp example? I'd agree with Shiv that no it wouldn't.
Yes, and I do believe what he wrote. I've seen plenty of the work Shiv has done with the Impreza, and everything I've seen from him so far is accurate. He's actually one of the best WRX tuners in the world, getting 350hp with stock internals and pump gas was unheard of before the WRX came to the USA. Anyway, the lost power has to go somewhere, it doesn't just dissapear. It's going to be lost as heat. Is the heat going to increase so much as to account for the 35 extra hp lost in his double hp example? I'd agree with Shiv that no it wouldn't.
Or another one...to accelerate 0-60 car one with 100 HP makes it in 10 sec. And we will assume that 80 of those ponies are getting the car there and 20 is lost in the drivetrain. Now, raise the power to the 180 HP! How long is gona take to get there? According to your interpretation of the Shiv, I would say 5 second, since all of the losses are already done in the first 20 HP and twice the 80 HP would get you there twice as quick!
Makes more sense this way?
Fedja
Last edited by MrAWD; Jan 22, 2003 at 03:37 PM.