Erik@MIL.SPEC

iTrader: (94)

How about 340whp? This was on a DynoJet 424x.

Thanks.

Evilution VIII

I think 12% might be a good number for All wheel drive, drive train loss.

Kyle.

QAT-R

iTrader: (17)

I don't know about dynojets but, I'd say its about 15-20% parasitic loss on a mustang/DD dyno. 300 = 360ish, 340 = 400ish and so on.

MTMS4

which would put you at 386 crank hp.............for a 12% driveline loss.

4TUN8

iTrader: (18)

Maybe my math skills suck, but I got 336bhp....

MTMS4

Yup, your math sucks......340 whp = 88% of crank hp assuming 12% driveline loss......so crank hp = 340 x 100/88 = 386 hp.

Greg K

iTrader: (2)

12% is a very low estimate for an awd car. I would be guessing about 20-22% loss.

EVO-8-Nate

Agreed, there is a lot of extra parts to move when talking AWD. FWD and RWD would seem like the would have less drivetrain loss. My Z's was about 12-15%.

-Nate

anjapower

iTrader: (18)

about 360 at the crank, 340whp is around 410 at the crank.

4TUN8

iTrader: (18)

Hah, I thought you guys were talking about 300awhp....my bust.

DaWorstPlaya

iTrader: (31)

Drivetrain loss in RWD and FWD cars is about 15-17%

Drivetrain loss in AWD cars is about 23-25%

EVOs come from the factory rated 276HP and produce 210-215WHP on the Dyno .... that's about 24% drivetrain loss ....

But then again Dynojets are know to read higher .... if someone could post what a stock EVO reads of a Dynojet, we can figure out what 300WHP on a Dynojet equals to at the flywheel ...

Warrtalon

iTrader: (6)

Actually, that won't really help. You were off a bit about the 05s dynoing 210-215...that's what the 03/04s dyno'd with a 271 claim at the crank. I dyno'd 248awhp on a Dynojet, but that most likely means the 276 claim by Mitsu is well underated. At 20% drivetrain loss, that puts me at 310, which is quite believable if you compare it with an STi. The fact we can hit 104-105mph in stock form supports this hypothesis...

Erik@MIL.SPEC

iTrader: (94)

So dividing 248 by .8 gives you 310.

That would mean 300 = 375 and 340awhp = 425

And that's 300 awhp at 100 degrees Not bad for the WR turbo and no cams and no test pipe.

yesevo

iTrader: (13)

300whp=340hp
i dont think there is much difference......

fromWRXtoEVO

iTrader: (18)

Atlvalet,

I am glad you ask because I have the correct answer and no bull****.

I go with what the professionals tested, you specifically mentioned that your car made 340WHP on a Dynojet 424X AWD Dyno.

This is the definition of that Dyno used on Motor and trend when they compared the STI and the 05MR:

We tested the STi and MR , this is a inertia-type dyno, which means the car rotates in two 2500lbs rollers(front and rear) instead of fighting against some artificial resistance like electric brake or hydraulic pressure.
This Dyno is capable of correcting:ambient temp,barometricpressure and humidity using SAE formulas.


Summarizing:

a 05 MR rated at 276hp made 239whp and 248lb/tq on the 424x Dyno

so your 340whp on that dyno equals 392.6HP to the crank

By the way, the STI rated at 300HP made 233WHP and 249lb/tq on the same dyno

References: Motortrend Oct 04 page 97


Last but not least, for the first time in many many years, the prestigious European magazine Automovil tested the European EVO8 obatining a cranck hp reading of 311HP from a "280hp" factory rated EVO 8