Any issues with putting the car on a dyno when it only has about 300 miles on it? I'm thinking it's probably best to wait a while but wasn't sure. I would think I would get better numbers after it's fully broken in.

 

Probably would get better numbers once it's broken in. Not sure if Ford does this on the regular cars, but on the GT500's I don't think they fully "unlock" the motor until it's had a certain number of start/stop cycles.

 

what mods are on your Mustang now?

 

None. I just want to get some baseline numbers and make sure it's putting down as much as it's supposed to.

 

There's no specific, written number for RWHP. Every car can be different than the next. The crank HP is what they advertise and some cars may be above and some below that. Subtract the driveline losses which also varies due to tranny type, wheel/tire weight, etc and you can see that "putting down as much as it's supposed to" is in reality undefined. There are rules of thumb so typically subtract roughly 12% from crank for a starting point.

The dyno will not hurt the engine. You probably are harder on it on the street.

 

Yep, I'm aware of the numbers not being set in stone. Just curious to see what it's putting down right now and then hitting the same dyno after each mod.
When I say "putting down as much as it's supposed to" I really mean just seeing if it's in line with what others have reported, like around 350-370whp. Good to know about not hurting the motor on the dyno though. I might still wait until I have a few more miles on it though.

 

A steady controlled load from the dyno will help to fully break in your piston rings.