# Racer's Lounge - dyno question...

View Full Version : dyno question...

Tom's_03SVT
11-26-2005, 07:58 PM
My buddy has a 2000 Z28 M6 with a lid, K&N, SLP Y pipe, LM, and a HPP III it made 282/300 on a mustang dyno, what would his numbers be at the flywheel?

Tom's_03SVT
11-26-2005, 08:45 PM
Ttt.....

unit213
11-26-2005, 08:55 PM
Are you looking for a conversion from a Mustang Dyno to Dynojet numbers then
to the flywheel? That's really not possible...it would be a guesstimate only.

15% parasitic loss through the M6 drivetrain if a fair assumption.

Tom's_03SVT
11-26-2005, 10:59 PM
Are you looking for a conversion from a Mustang Dyno to Dynojet numbers then
to the flywheel? That's really not possible...it would be a guesstimate only.

15% parasitic loss through the M6 drivetrain if a fair assumption.

Unit,
I thought that was for dynojets? I thought that mustang dynos put out lower numbers than dynojets do to more parasitic draw?
(Dynojet 15% M6 18-20% A4).

so its the same across the board then, no matter what Dyno...?

bbfirebird
11-27-2005, 12:32 AM
mustang dynos simulate aerodynamic and road resistance loads, dynojets do not. therefore, dynojets typically give you a higher number than mustang dynos do. so while your friend made 282/300 on a mustang dyno, if he went to a dynojet, he'd make around 315/330. at least thats what my car (2000 M6 formula) made when it had a lid, catback, and posted/polished throttlebody. realistically, a dyno isn't a tell-all of the power an engine makes. there is no "set-in-stone" percentage of drivetrain loss, some people will tell you as low as 10%, some will tell you as high as 18 or 20%. it's all an estimate. also, the same dyno on two consecutive days can give you different results. dynos are intended to be used for tuning a car, not to give a guaranteed figure of how much power a car makes.
that being said, you can figure your friend's engine makes around 345-350 HP at the flywheel, give or take 10 HP.

Tom's_03SVT
11-27-2005, 11:21 AM
cool thanks

Tom