Dyno

[DanFish]

I will be taking my car to the dyno to get a baseline run done before I install my COBB tune. I have an automatic so what gear should I have the shop dyno my car in?

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[EcoSnake]

I think 4th gear.

 

[dragonacc]

I believe the results are more accurate the closer you get to the 1:1 ratio. You could use an online calculator to see what's the highest gear you can use with the stock 145 mph speed limiter.

Cobb used both 3rd and 4th. I don't think the non-PP cars can reach redline in 4th with the stock speed limiter, not a problem for you.

 

[wireless]

They should figure it out, but it'll be 3rd or 4th.

Good luck. My cobb results were: 249whp, 415wtq lol

 

[DanFish]

They should figure it out, but it'll be 3rd or 4th.

Good luck. My cobb results were: 249whp, 415wtq lol

Did you let the OAR fully adjust?

 

[wireless]

Yes. Lol

It was a mustang dyno. i question the results though, stock was supposedly 252/352...

*shrug*

Cobb Plano ... heh.

 

[greg hazlett]

352 tq stock? Really? Uhhh....

 

[Vinny@JLTPerformance]

I would have them do pulls in 3rd or 4th. While the 1:1 gear will typically get better results on most cars. On turbo cars the pull can be so long and build so much heat that the car will pull timing in the upper RPMS. You'll find peak HP will be very similar, the car will probably make a little better torque in a higher gear as it loads it up more.

The shop I use to work at we would do this in most of the Subaru's and other turbo 4's unless they were big power cars.

 

[Drift-Office]

Typically, we do them in 4th gear. On the EB in 5th, there's going to be too much heat soak (since the dyno cell can't replicate 100+MPH of wind) to have an accurate representation of what you're putting down.

My 2 cents!

 

[MAPerformance]

352 tq stock? Really? Uhhh....

The dyno in Plano has often had issues with torque numbers. Their HP numbers are pretty solid in comparison with other dyno's. The torque is usually 15% high on their dyno, I used to live right next to them!

I'll have 15SVO's Auto EBM here Saturday and will let you know what I come up with for the best gear to do a pull in. My guess is 4th based off information I have been seeing.

 

[greg hazlett]

The dyno in Plano has often had issues with torque numbers. Their HP numbers are pretty solid in comparison with other dyno's. The torque is usually 15% high on their dyno, I used to live right next to them!

I'll have 15SVO's Auto EBM here Saturday and will let you know what I come up with for the best gear to do a pull in. My guess is 4th based off information I have been seeing.

Adam-that was 352 STOCK...that cannot be right when it is only rated at 320 to the crank from the factory.

 

[MAPerformance]

Adam-that was 352 STOCK...that cannot be right when it is only rated at 320 to the crank from the factory.

I'm aware, and stock torque numbers on a dyno are about 270-280. So this one is about 20% off. Haha.

 

[Juben]

On an automatic, 3rd is 1.52, 4th is 1.14, and 5th is 0.87. In most cases, you want as close to 1:1 as possible, so I'd go with 4th.

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