If rough (+/- 3 hp) numbers are good enough, and you know exactly what your
car weighs -- not curb weight but weight ready to drive with you in it, which
is about 250 lbs. higher than curb weight -- and you can find a nice flat
straight stretch of lonely road, than a G-Tech pro might be good enough.
http://www.gtechpro.com
Whether you do it this way or in a dyno shop, it's important to control for
atmospheric conditions. Temperature, barometric pressure and humidity together
can make as much as +/- 5% difference. That doesn't sound like much, but
sounds bigger if you think of it as a 30 hp range of error on a 300 horsepower
car. And this doesn't even take altitude into account. In my RX-7, at sea
level, the difference between a cold, dense air morning and a hot summer
afternoon was at least 25 hp.
-----Original Message-----
From: owner-ba-autox@autox.team.net
[mailto:owner-ba-autox@autox.team.net]On Behalf Of Brad Martinson
Sent: Monday, February 26, 2001 21:22
To: ba-autoX@autox.team.net
Subject: Bay Area Dyno ?
Is there anyone left in the bay area doing dyno testing? I'm ready to
start making some engine mods, and kinda thought a baseline would be nice,
so I can look back and rationalize it all as "money well spent".
thanks - brad
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