eriktreves

Mustang Dyno. Good low humidity day and pressure at 2998... Only mods. F-sport DIY box with K&N filter and F-Sport exhaust....2011 NAV DVD....lol...should be worth something right...oh rear F-sport sway bar....about worth the same on the dyno.. .289HP / 260 TQ. SAE

http://www.youtube.com/watch?v=zmpbo6XojLQ

Soap

Good Numbers...

Gville350

iTrader: (10)

It was only rev'd to 6300?

eriktreves

The dyno was off by 60 RPM and the engine was falling off at 6400 anyway on the previous pull to 6500RPM, so we just closed the RPM window down for data collection to 6300 RPM where max power was. We bounced off the limiter on the pull before.

06isDriver

335 flywheel horsepower with 16% drivetrain loss from a drop in filter and axle back????

I think that dyno could be pretty optimistic. Nevertheless, good numbers. What are you running in the quarter mile? ET and MPH?

Gville350

iTrader: (10)

Mustang dynos are notoriously generous when it comes to the #s. Perhaps a visit to a DynoJet would prove a more "base" WHP.

ISF4life

iTrader: (30)

agree

http://beta.caranddriver.com/feature...our-dyno-lying

JYOO

Really? Were these cars underated or generous dyno?

06isDriver

Lets put it this way: I've got full headers, exhaust, intake, polished throttle body/lower plenum, and mapecu tune and managed 293 on a dynojet. I'm waiting on some colder weather for 300.....

My "stock" (invidia mid and axle back) was only 258-260.

So he's either got a freak beast or the dyno is very generous.

MPH in quarter mile will be a good indicator of if these numbers are legit. I ran a 12.96 at 107 just last week.

06isDriver

I also noticed that mine fell off around 6400. It seems to richen up right before a shift, I guess to prevent damage. It got down to 11.5 AFR in that range, so I pulled it back up to around 12-12.2 AFR and got another few horsepower out of it I think. I dont recall too well.

llamaboiz

Ok, in all fairness to the OP, maybe he has one of those engines at the top of the curve... OR maybe that dyno is still using the old way of measuring, for those that dont know back in 06'ish they reformulated the way they measure hp if you look at a stock corolla back in 05 they were rated at 140hp then in 06 they were rated at 132hp with the same motor same everything. In Japan the IS350 are rated at 316? 318? hp.

So while yes a dynojet would be ideal, for now just take those numbers and smile

eriktreves

Did not go to the track. Agreed this is the most accurate method. Having said that. This is the only dyno I ever use and it is accurate. My 392W Turbo Factory Five 543/650 to the wheels is a beast.... you have to know ALL chasis dyno's will vary output values +/-. The real take away from a dyno is the change that you see during a tuning session to see what you have gained when measuring differences..

Comparing your dyno run to mine is apples to oranges without knowing correction values, type of dyno and who calibrated it or when the last calibration was done. Also was it an inertial dyno or one with an eddie brake on it (load sensing). The best case would be to both cars on the same day on the same dyno.

To put in perspective....one of my earlier cars was a 460RWHP car 2350lbs and did 119.2 at 11.86 with a bog launch and spinning a bit in second....

My current car does the 1/8 in 7.55 @ 102 MPH and weighs in at 2525 with 543/650 Hp,TQ which is about right...would be faster if I could launch the thing.

All measured with the same dyno.

I didn't put the numbers and video to boast...the numbers and curve are what they are.

FYI, why people think the dynojet is better than a mustang dyno I will never understand...an inertia dynojet will give signicantly higher numbers than a dynojet with a eddie brake setup, also the cal factor that is used to setup the dyno makes a big difference.

The first thing I always ask when going to other dyno's is "does this dyno have an eddie brake or loading system"...if the answer is NO, then I just move on. The inertia dynojet is only good for one thing "in my opinion", Naturally Aspirated WOT runs to spit out numbers.

You can see our dyno setup at VeryCoolParts.com...I was a customer, now I work there (off and on as of late) Mine is the Green Cobra.

If you don't find the numbers or this thread useful...go ahead and delete it...won't both me at all, just thought I would share with you all what it did. Love the car!

Always with respect (to the forum and its members),

Erik

06isDriver

no disrespect at all, man.

The dynojet I did mine on was definitely eddie brake. Maybe you've got a factory freak. You should definitely take it to the track to find out!

eriktreves

I probably will. They only have a 1/8 mile here local and I would like to do it on a 1/4. It is a the perfect time of year to go...big numbers on the top end. We were out in the owners FFR Cobra yesterday...4.6 terminator motor (x 2 turbos + x 1 Eaton Supercharger) yes 2 turbos feeding a supercharger making 22 pounds of boost and it was spinning the tires over at 90 MPH in 3rd... only 705 Hp on that car (2550 lbs) Nice!

If you can find out what the cal factor your dyno is setup for measuring HP, I should be able to go back into the computer and make it match up and then reprint the dyno sheet. Not a big deal really either way. Course the temp and PA will again make the numbers slightly different....

that article is a good read...it truely captures the inconsistancies when using chasis dyno comparisons. THis quote about sums it up for me....all by changing the conditions of the test.

"Basically, what horsepower would you like? I can give you anything from 330 to 420 with the same car," Dinan says"

FYI, something I forgot to mention... the car I traded in for the IS350 was a 2009 Honda Civic SI which is rated at 197hp...on the same dyno it put down 168 which using a 15% drivetrain loss factor is 193 +/-.....course again...different day and all