Dynoed Today

[Redfire 05]

I got my car dynoed today. It was on a Mustang Dyno so I was expecting lower numbers than what you see printed in the mags and discussed. Plus I didn't get much time for cool down as it was dyno day and they were doing 2 pulls per car every 30 min. I showed up early to let my car cool down, but the car that was supposed to go before me didn't show up and they put me right in. Anyway, I ended up with:
281 hp at ~ 6000 rpm
287 lb/ft at ~ 4300 rpm
That's with the following: 87 octane Brenspeed Tune
K&N FIPK
62mm BBK TB
Pypes X-Pipe, Stock Cats, Pipes Mid Pipes
Hooker Axle Back Exhaust

I was pretty disapointed until a few other cars ran and I saw the numbers they put up. A S197 Shelby Mustang GT w/ manual tranny made 251 hp and 263 lb/ft. I expected my car to be similar or slightly higher that this car but I was really happy at how much better mine did.
Some other numbers:
The guy running the show has an 01' GT auto and he said his ran 205 hp.
A C5 Z06 Vette ran 358hp
My buddy's 73 Mustang w/ a 351W made 315lb/ft and 260hp.

 

[DarkFireGT]

Don't be ashamed of those numbers. Those are great numbers for a few bolt-ons. The dyno I used had me at 249RWHP stock. With my bolt-on's I'm at 284RWHP. I know on some dynos that would put me over 300. At least you could see other cars there, to get a feeling of your relative power. I got a good baseline and went back to the same dyno, so while 284 doesn't sound great, it's 35 more than stock.

 

[Redfire 05]

Don't be ashamed of those numbers. Those are great numbers for a few bolt-ons. The dyno I used had me at 249RWHP stock. With my bolt-on's I'm at 284RWHP. I know on some dynos that would put me over 300. At least you could see other cars there, to get a feeling of your relative power. I got a good baseline and went back to the same dyno, so while 284 doesn't sound great, it's 35 more than stock.

I figured my car would make close to 300 on a Dynojet so I was expecting 290+ on the mustang dyno.But yeah, I'm really glad the Shelby showed up for comparison. If it had not I would feel pretty bad. I figure the Shelby should be slightly better than stock so I'm pretty happy with 30hp better.

 

[steedman07]

Those are good numbers considering it was warm and ur car was hot and it was a MD dyno....My shop uses a Md 1750 dyno, it it definitley reads lower than dynojets..The Shelby GT did 250 rwhp?? my gawd..

 

[gmantheman]

I bet the Shelby owner was a little disappointed. I would figure they would put out at least 280 hp on the dyno.

 

[1hOtStAnG]

I would figure they would put out at least 280 hp on the dyno.

Why?

 

[steedman07]

Why?

Because it says Shelby man..oh, and its tuned...

 

[gmantheman]

Exactly, it's tuned. Aren't they rated at 325 hp at the flywheel. So shouldn't a shelby be putting down 280 at the wheel? Did ford overrate the shelby and the tune actually decrease hp?