dyno

[bcreverend]

hey everybody,
i've never gotten a dyno before. can yall tell me what kinds of places have them and what the normal price range is?
thanks in advance!

[Ripn12s]

if you can get a group together it will lower the price. Last time I dyno'd w/ a group it cost 50 for 3 pulls. It cost me 75-100 an hour for the dyno when i had my car tuned

[yamahaboy]

what exactly do they do to the car when they tune it? do they tune the pcm or what?
Eric

[bcreverend]

thanks ripin...what kinds of places should i call though to get a dyno? i wouldn't think the dealer or pepboys would have one. do i go to a performence shop?

[Ripn12s]

I would search for some shops that do alot of work on fbodies. Around here they seem to be the best shot at getting a good dyno. I good source for local dyno's would be your local GP club.

yamahaboy,

Thats exactly what they do. When tuning my car they made a baseline pull of 270, then they went back to thier laptops and made some changes and the next pull was 291 at the wheels

[yamahaboy]

wow thats a huge change in wrhp thanks for the info

[WRBsGTP]

i can't help but ask... what's a dyno?

[theblurr87]

Originally Posted by WRBsGTP

i can't help but ask... what's a dyno?

dyno is short for dynamometer. a dynamometer is a device for measuring forces, here on a car it would be the torque and horsepower

http://86.1911encyclopedia.org/D/DY/DYNAMOMETER.htm

for more info

[WRBsGTP]

thanks blurr--although i have to admit it sorta lost me after the third sentence...
i'm just wondering how it improves performance and what exactly is done to the car when people have it done?

[theblurr87]

Originally Posted by WRBsGTP

thanks blurr--although i have to admit it sorta lost me after the third sentence...
i'm just wondering how it improves performance and what exactly is done to the car when people have it done?

hehe sorry. 2nd year engineering student. the dynamometer simply measures the hp and torque. when tuners tune the car and work with the pcm (the cars computer). they can read the cars diagnostics when hooked up to their computer and then change the software to tweak it for more output, like ripn said. things like full air/fuel ratio tables and timing are improved. they can also change shift points, tranny line pressure, coolings fan setpoints and so on.