Interesting Dyno Results

[GT_Roadcourse_Newb]

Factory freak, I hope!?

Also, 2000 miles on the car... Is it learning to drive fast? Is that the bump?.. Mystery...

346 Tq
393 HP!

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[jbailer]

Looks more like a dyno freak to me. That little blip on the end for both torque and pwr doesn't look right.

 

[Mustang5.0]

Seems about right factoring 10% drivetrain loss

 

[GT_Roadcourse_Newb]

Seems about right factoring 10% drivetrain loss

I thought we should expect closer to 20% loss, no?

 

[40calcobra]

Not a factory freak sorry! And no on the 20% drivetrain losses

 

[GT_Roadcourse_Newb]

Ah well, thanks for the info!
So 10% is correct expectation for drivetrain loss?

 

[50hhh]

Modern cars especially sports cars lose no more than 10-15%. Stock GTs should put down 390 on a properly tuned dyno

 

[ATLalien]

Just a quick search on this forum and that does seem to be a little high, but not ridiculously so. In fact I found only one stock dyno run that was higher at 404. The others were all in the 375-388 range.

Always a lot of variables with any dyno though.

 

[jbailer]

That's 3 runs correct? To me, it looks like 1 of those runs went well. The other 2 had some kind of weird spike at the end. I could see a little blip in power as you go up but I seriously doubt torque would jump up like that too near redline. It should be falling off. 2 of the runs do that on both power and torque. I'd use the run that didn't jump at the end unless you just like the number, then use what you like.

 

[DarkestHour]

If there is a bump in the dyno then the dyno got some bad data.

 

[GT_Roadcourse_Newb]

The tuner thought out loud 'maybe the ECU is learning to be fast... it retarded the timing and then gave it back'

It happened 2x out of 3, and the car only has 2000 miles on it. Perhaps it is in the middle of tweaking its default programming / learning its settings?

Total guess, apologies in advance please do not flame too briskly ;)

 

[Quackfoo]

Every dyno reads a bit differently. Some higher, some lower. About the only thing a stock dyno is good for is a baseline before doing mods so you can see the changes

 

[NvrFinished]

I assume it's on 91 octane pump gas and not 93 as well!

 

[GT_Roadcourse_Newb]

I assume it's on 91 octane pump gas and not 93 as well!

Hmmm. yes, 91 octane, but tapering off from a 50/50 91 octane/100 octane mix courtesy of Thunderhill.

 

[EFI]

As mentioned, that little blip at the end is not normal (unless you hit it with a small shot of nitrous lol) and has increased the numbers by idk 20-30hp. The curve should be smooth just like the rest of it below that.

This happens in big stalled automatics where at the beginning of the run the converter flashes and the dyno reads a very high torque number which then immediately starts dropping and acting like a normal curve.

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