I just went to a local Subaru tuner for their dyno day. The shop uses an Australian Dyno Logic which reads really low (about 25% lower than a DynoJet). So anyways, here are some results.
- Impreza 2.5 RS with custom turbo = 112 awhp
- stock WRX = 135-138 awhp
- WRX with MBC, and some bolt-ons = 150-160 awhp
- WRX with turbo upgrade (IHI VF30) and minor mods = 185 awhp
- stock EVO (not from this dyno day) = 170-175 awhp
- EVO with ecu flash, catback, and intake = 184 awhp
- My EVO with RMR catback, dp, UR 3" cat, and K&N filter = 203 awhp
- STi with muffler and intake = 176 awhp
- stock STi (not from this dyno day) = 185-195 awhp
- STi with turboback exhaust, boost controller, and other bolt-ons = 230 awhp
- stage IV WRX = 240 awhp.

Overall, I'm pretty happy with my result, and hopefully I'll be making more with WORKS (or maybe Vishnu) ecu flash, and throttle body.

 

im guessing u probably have around 250awhp?? no boost controller yet>?

 

No, I'm still running factory boost, but it peaks around 20-20.5 psi with the exhaust.

 

you have to be running more hp than that... what gas were you using?

 

your happy with that??? with a RMR intake and a grounding kit as my only mods at that time, i pulled a 242 to the wheels!!!???!!
unless your counting your 25% differentiation which would make it about 260 to the wheels, which is good.

my dyno was on a dynajet in rancho cucamonga at GT motorsports (the only AWD dyno in the I.E.

 

I was pretty happy with that result after I saw other cars on the same dyno.
After the calculation from the guy at the shop. My car has an estimate of 315.5 hp to the crank, and about 260-265 Dynojet awhp. (based on other EVOs that went on the same dyno)

 

I'm still running stock ECU (on California gas) without any boost controller or re-flash. Only mods are RMR catback, downpipe, UR 3" high-flow cat, and a drop-in filter.

 

Contrary to popular belief, WHP numbers aren't all that accurate, and it looks like you already found this out. I've talked to a number of dyno operators who chuckle at how people think WHP is the end-all, be-all number for a particular motor.

This is mainly because of variables such as barometric pressure, humidity, temperature, wheel size, tire style, tire pressure, etc etc etc. More evidence is in the fact that you can run 200whp in one place, drive somewhere else that same day and run 35whp different from the last one.

Averaging your dyno numbers in relation to other vehicles is the best way to get an honest idea of your power. Unless you're going for bragging rights. Then find a guy who will run his dyno late at night in the cold, at sea level, on a dry night, air up those tires to 75psi and stand back!

Nice numbers when compared to the other cars you listed...from what I've read, your numbers seem normal. i sure hope my g/f gets her Evo soon. lol.