how come whenever i see a wrx dyno'd in a magizines they always have hi dyno numbers like this oct. 05 import tuner they state 202.5 and 198 tq when i have exhaust, dp, up and reflash and only make 205hp and 190tq.... its hard to believe that a stock wrx keeps up with me cause my brother has a stock one and i walk on him...my baseline dyno was 180/179... did i just have a slow wrx stock?

 

All dyno's read differently.

The types of cars that regularly show up in magazines usually go to a high reading dyno to try and make their numbers bigger. That is pretty much it. Dyno numbers are not guaranteed to be the same for every dyno manufacturer. Heck, even the same manufacturer dyno at different shops can put down different numbers.

 

i mean i can understand hp numbers being different but there is over a 20whp difference between my basline wrx and there basline wrx...

 

20hp is honestly nothing.

A wrx will baseline on a mustang dyno ~155-160. It will dyno on a dyno dynamics around 180-190. The actual numbers don't really mean much, what matters is how much your numbers change when you put different mods on.

 

thanks nicely put

 

wow, my wrx must be a chump then. my baseline was 163whp on a dyno dynamics dynometer.

 

my guesses are only averages, and could easily be wrong, depending on how that specific dyno was calibrated.

Ask that dyno operator what stock wrx's generally make, and i bet you're within 5hp of that.

 

First, I'd like to say, "hello" to everyone.

As for dynos. They all read differently, as was mentioned.

On a Dynapack dyno, STis are only putting down around 220-230whp. On a Dynojet dyno, they put down closer to 250-260whp. It all depends on the dyno. Some are more conservative than others.

Keep in mind that a dyno is a tuning tool, and nothing more. In fact, I'd rather dyno on a dyno that is more conservative than not. The numbers read lower, which sucks, because we all like to hear how we're making MORE power, not less, but in the end, if you do get on a less-conservative dyno, you'll be more exciting.

The big misconception about dynos is that people think they're for bragging rights, and will estimate you a 1/4 mile time. Not true.

 

So what does a dyno run usually cost across the country?

 

Dyno time usually runs around $75-$100 for 3 runs, or an hour. It's not cheap.

If you were thinking about buying one for yourself, make sure you have over $150,000.

 

Great observation. I'd rather have someone tune for the greater area 'under the curve' on a dyno graph, rather than concentrating on peak HP. A 'peakier' engine requires transmission gearing that is very closely spaced, much closer than the standard WRX 5MT gearing, otherwise the engine RPM will fall below the usable torque range after each shift, making for a slower car in acceleration contests. The all-or-nothing power curve is also unpleasant to drive on the street.

This fact is proven in some magazine shootouts like an older Sport Compact Car issue where IIRC a Supra had a giant turbo and upwards of 600 peak horsepower but was slower in the ¼-mile than much less powerful cars in the shootout because it was almost undriveable. The driver has to rev the **** out of the car to get a good launch but then the problem is compounded with potential wheelspin. The useable power band is so narrow that each shift is accompanied by a huge bog.

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