UberDuper

I haven't received the graph yet and I didn't see the torque number at the dyno. 2 pulls came up at 325HP on a dyno dynamics which seems really low for a stock '13 GT.

I *think* the pulls were done in 4th. With 3.73 gears is that a reasonable peak? I'm reading that it should have been done in 5th.

I'll post the graph when I get it. I'm just kinda bummed and wanted to get some feedback.

MoshpitMad

That's odd. What were the temps like and humidity?

UberDuper

Low 90s out and probably ~70% humidity

q8stang

i own a dyno dynamics, if the dyno was not on "comparison mode" reading "flywheel hp", then your number seems correct. keep in mind dyno jet (industry standard number) reads 20% higher than a dyno dynamics

UberDuper

Hopefully the run report will have some details on it. Was a $40 "dyno day" run so I didn't ask for details. Just said it was lower then expected. I was expecting around 350 - 360 somewhere.

Senderofan

Yep...I think you're right...fifth gear is 1:1 on the manual gear box. Also...I think atmospheric conditions were not in your favor....which would also lower your peak numbers.

I had my truck dyno'd this past Wednesday. The guy has one on a trailer and does it outdoors....same temp and humidity as you describe. He kept my hood down and got my numbers on the third pull....the runs were back to back to back so I was thoroughly heat soaked. Anyway, I know I was down probably 20-30 hp and torque maybe 50-100 ft/lbs ???. I would say....schedule a pull when temps and humidity are down....and make sure you're in the proper gear to make the pull. I would have thought you'd have pulled more than you did as well.

Don't get too bent out of shape...lots of variables that can really impact the bottom line when making pulls.

Wayne

MrSandman

Needs to be 5th gear.

UberDuper

Wouldn't 4th gear show higher numbers then a 5th gear pull? I'm a little confused on this.

siggyfreud

The numbers wouldn't change THAT much, but would probably be lower in 4th, due to needing less power to accomplish the same amount of work.

They may do them in 4th, if 5th is going to make you hit the speed limiter on the car.

UberDuper

That's a good point. I don't know what the limit is on these cars but 7k in 5th is 150mph.

I'm hearing from others on a local forum that this is a well known low reading dyno and my numbers are in line with similar mustangs.