dyno ?

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Jan 5, 2009 | 08:03 PM

TravisMcGill2000

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From: chats,ga

dyno ?

what gear is better to dyno in 2nd or 3rd..the car is a a4 with 2.73s..

Jan 5, 2009 | 08:10 PM

2000_SS

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From: Webb City, MO...out in the garage

whichever gear is 'drive'...assuming it's the stock A4, 3rd gear

Jan 5, 2009 | 10:26 PM

Slowhawk

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From: Bridgewater,Ma

I prefer 2nd with that gear set since 3rd brings it into a stupid mph which can be dangerous with the wrong tires.

Jan 5, 2009 | 10:31 PM

johnLs1camaro

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From: NA,Indiana/louisville, ky

i've always done 3rd but im no pro!!

Jan 5, 2009 | 11:53 PM

thunderstruck507

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From: Northwest AR

Slowhawk, is there any real difference in dynoing in 2nd or 3rd?

I've never heard of doing a pull in 2nd...if there's no difference wouldn't it be less hard on the rest of the drivetrain to just do it in 2nd?

Jan 6, 2009 | 05:57 AM

Slowhawk

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From: Bridgewater,Ma

Quote:

Originally Posted by thunderstruck507

It depends on the setup.the dyno WILL read a lower hp.The problem with low gears like 3.08/2.73 is that a stockish car barely has enough power to pull to redline in 3rd.Then you add a stock tire with a speed rating of 120mph or so,the tire starts to float at 150mph.

If you have a truck,the driveshafts are only rated for a certain rpm.I've personally had 3 truck driveshafts explode on the dyno which broke the tranny/transfer cases.So trucks ussually get 2nd gear.

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