Evo's real HP...
Originally posted by martiandl
Car A 3250lbs, 271hp, Agressive gearing =13.4 +/- quarter
Car B 3250lbs, 271hp, Normal gearing = 14.2 +/- quarter
Agessive gearing will make a less powerfull car faster.
Car A 3250lbs, 271hp, Agressive gearing =13.4 +/- quarter
Car B 3250lbs, 271hp, Normal gearing = 14.2 +/- quarter
Agessive gearing will make a less powerfull car faster.
As of horsepower my car dynoed at 240 with the intercooler spray on on a dynopack. Running at 101.7mph it has more than 271hp. I'm thinking 288-291 on the fly.
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Evos have always been putting out at least what Mitsubishi said in the past. A typical flywheel number would be 285 - 290 bhp or 220 bhp to the wheels.
On the Evo 8, numbers are between 190 bhp at the wheels on the required gas (93 octane) at Vishnu and 225 bhp at the wheels everywhere else.
With drivetrain loss being 23-24%, I would educatedly guess the following:
- Vishnu dyno reads too low
- other dyno read too high
- the car makes what Mitsubishi say it does, give or take a few bhp
On the Evo 8, numbers are between 190 bhp at the wheels on the required gas (93 octane) at Vishnu and 225 bhp at the wheels everywhere else.
With drivetrain loss being 23-24%, I would educatedly guess the following:
- Vishnu dyno reads too low
- other dyno read too high
- the car makes what Mitsubishi say it does, give or take a few bhp
Newbie
Joined: May 2003
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Seems like the STi is making consistently more when dynoed same place same time, so unless both manufacturers are lowballing the numbers, I'd say it's pretty accurate. Of course, that doesn't mean you can't flash the ECU or unbolt the exhaust and say screw it to the factory numbers! 
Evolving Member
Joined: Dec 2002
Posts: 391
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From: Virginia
What I'm curious about is the apparently significant variation in the output of stock Evos. I've seen it mentioned by Shiv and others, but I haven't heard an explanation yet. As a stock class autocrosser who's not allowed to do much to the motor, such knowledge could be very helpful.
Anyone?
JW
Anyone?
JW
Originally posted by ImportPePe
Shiv's dyno is the Dyno Dynamics, pretty fairly commonly used in Australia, but rarely used in the USA. Dyno Dynamics tend to read hp ratings lower than other dynos. The most commonly used dyno in the US, the Dynojet, read around 240-250 at the wheels, which, when you use AWD drivetrain losses into account, it is well over the 271hp rating Mitsubishi has said. Besides, there's no way a 3260lb vehicle with 271hp can do low to mid 13's, can it? It has to be underrated.
Shiv's dyno is the Dyno Dynamics, pretty fairly commonly used in Australia, but rarely used in the USA. Dyno Dynamics tend to read hp ratings lower than other dynos. The most commonly used dyno in the US, the Dynojet, read around 240-250 at the wheels, which, when you use AWD drivetrain losses into account, it is well over the 271hp rating Mitsubishi has said. Besides, there's no way a 3260lb vehicle with 271hp can do low to mid 13's, can it? It has to be underrated.
https://www.evolutionm.net/forums/sh...threadid=24551
Cars were running that day had octane levels between 93-96 so that wasn't an issue.
Mark
Originally posted by jwtodd60
What I'm curious about is the apparently significant variation in the output of stock Evos. I've seen it mentioned by Shiv and others, but I haven't heard an explanation yet. As a stock class autocrosser who's not allowed to do much to the motor, such knowledge could be very helpful.
Anyone?
JW
What I'm curious about is the apparently significant variation in the output of stock Evos. I've seen it mentioned by Shiv and others, but I haven't heard an explanation yet. As a stock class autocrosser who's not allowed to do much to the motor, such knowledge could be very helpful.
Anyone?
JW
Mark
Newbie
Joined: Feb 2002
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From: Plano, TX
Originally posted by KK
That's true. I've never seen so much variation in a stock car before. We had Evos ranging from 214-236whp... that's a lot!
Mark
That's true. I've never seen so much variation in a stock car before. We had Evos ranging from 214-236whp... that's a lot!
Mark
With everything being equal...I would be hella pissed if my car made 214whp as opposed to 220 and up.
Evolved Member
Joined: Jan 2003
Posts: 1,121
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With a car that is boosted so heavily, atmospheric conditions will affect power output. And probably in ways that a dyno will not be able to correct for.
Personally, I consider 10 to 15 hp to be in the noise.
Personally, I consider 10 to 15 hp to be in the noise.
Evolved Member
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Originally posted by evoorsti
With everything being equal...I would be hella pissed if my car made 214whp as opposed to 220 and up.
With everything being equal...I would be hella pissed if my car made 214whp as opposed to 220 and up.
Evolving Member
Joined: Apr 2003
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From: OC
Originally posted by limey
I was....it was mine...actually it made 218 whp....although even this figure was a far cry from 234 seen from one evo stock....there is certainly something suspect about so much variation in whp...I have heard rumours through a reliable source...that it was the cam timing that was wrong....and Mitsubishi repaired some but not all before they were sold when they arrived stateside......if this is true...how do you think I should go about being compensated....or do you think it would be too difficult to prove?...or should I just suck it up for now and hope for a recall?
I was....it was mine...actually it made 218 whp....although even this figure was a far cry from 234 seen from one evo stock....there is certainly something suspect about so much variation in whp...I have heard rumours through a reliable source...that it was the cam timing that was wrong....and Mitsubishi repaired some but not all before they were sold when they arrived stateside......if this is true...how do you think I should go about being compensated....or do you think it would be too difficult to prove?...or should I just suck it up for now and hope for a recall?
Or is it sufficient to be X plus or minus 10% ???
If it's the plus or minus, then you're probably out of luck, if it's greater than or equal ( NOT less ), then you have a claim.
Anybody know what the actual situation is ?
Anybody know about Mazda and the Miata low horsepower ? What happened in that case ??