I just read an article about how Mazda falsely advertised the HP rating of the US RX-8. Due to the error, they offered to buy back owner's cars or give an extended warranty and some other stuff. I know a friend of mine who's Hyundai was listed with the wrong HP rating. She got an extra year's warranty.

Basically, is our EVO really pulling 271HP? I've read many dyno threads, and I know there's some loss in AWD dynos and a variety of dyno brands. Some questioned whether our EVO's were HP overrated. I just want Mitsu held accountable if they were falsely advertising.

 

Mazda is just retarded. That's their main problem

 

Yes, and that number might actually be a tad low. Stock EVO ET's/trap speeds are indicative of 271HP. Any person that tells you other wise, or has moon dyno figures that are not consistent with the advertised 271 HP are complete idiots.

 

IMHO? Absolutely.

Mazda blatently overrated their already-underpowered rotary. They knew it, and they folded under pressure after they were putting 180hp to the wheels with a supposed 250bhp.

The Evo dynos I have seen HAVE varied quite a bit, but I think it's due to several factors:

1) the turbo characteristics of this engine magnify any otherwise relatively insignificant environmental factors such as humidity, altitude, ambient temps, etc. So a guy dynoing in Albuquerque NM is definitely going to be a WHOLE lot different than someone in Orlando FL. That's why I think all dyno charts should include the following info:

- temps outside and inside engine bay
- humidity, barometric pressure, altutide
- location of dyno
- dyno type
- realized and SAE power ratings
- complete description of any changes made before/after runs

I also think all dyno runs should be made only after the engine/drivetrain has been heat saturated. I would make at least 2 passes before believing any data collected thereafter.

2) break-in: I wouldn't even consider a baseline dyno accurate until after 5000+ miles.

3) AWD dyno variations seem to be a big problem, whether it's a drum-type dyno or a dynapack or whatever. Also people are sometimes posting "guestimated" bhp dyno graphs using the standard 15-17% increase equation.

All in all I totally believe this car is putting ~ 225hp to the wheels, stock. I even further believe the torque ratings. My old 330i was underrated by BMW, 225bhp/214ftlbs, putting 198hp to the wheels and 200 ft-lbs. That's only a 12% drivetrain loss, ridiculously low! There is no doubt in my mind that my Evo bests my 330's acceleration by a significant margin (at least 3/4 of a second 0-60 if not more). And the weight difference is only about 150lbs.

 

This is the second time Mazda has done this. It happen last year or the year before for the Miata too. They offered to buy back the cars or give the buyes like $1000-1500 cash back if they decided to keep their cars. A local guy around here dynoed his Evo stock and someone dynoed a stock STi right after him on the same dyno and the STi put out only 3hp more at the wheel. I think the Evo is pretty close to what they predicted. Plus there are going to be cars that were just made on a good day and others that where made on Friday afternoon with all the old tools..... I would estimate some Evos at 271 others at 260 yet others at 280 hp. Same with the STi, Honda s2000 (another guy from a local autocross traded his s2000 in for a new one after only 3 months of owning it because it dynoed almost 15 hp less than his friends, both being stock and similar miles) and so on. What do you guys think.

 

Just to reinterate, I think my EVO is very quick and powerful, but I'm coming from years of driving 120hp 4bangers. Some of the stock timeslips seem to back the 271HP. I understand there will be differences between various EVO's.

Another point I like to make, my friend's Hyundai was only misrated by 3-4HP, and was still given an extra year warranty. I guess I'm more curious on how they actually find these things out.

 

in jsut plain engish, no assumptions should be made from dyno numbers unless the dyno pulls were made with the motor out of a car... It is almost impossible to get exact figures from wheel dynos. I'd rather pin mitsu with falsely advertising 0-60 times.... I mean don't even try and tell me mitsu can drive better then half the world.... They can't even warranty broken parts without b****ing...

 

Mitsu advertised a very conservative 0-60 at 5 seconds. I am getting under 5 seconds and www.motortrend.com + car & driver post the evo at 4.4-4.9 seconds 0-60 which I find to be accurate. Many drivers do not know how to properly launch there car causing one to run a very poor time. My car runs fast times at low trap speeds because of my launch.