Dyno pulls

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07-23-2009, 03:42 AM

#21

stevejohns29

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hmmm when i was dynoed we used third gear

07-23-2009, 07:11 AM

#22

RusWolf

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When i was tuned, then tuner used 4th gear as well.
It is the closest gear to 1-1 ratio.

07-23-2009, 02:53 PM

#23

cburglb34

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Quote:

Originally Posted by RusWolf

When i was tuned, then tuner used 4th gear as well.
It is the closest gear to 1-1 ratio.

in the manual trans it is a direct 1:1 gear idk bout auto trans

07-24-2009, 02:36 AM

#24

Windu

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Theoretically 4th is ideal. I have done back to back pulls in third and forth and havent seen any real difference in #s. I usually do it based on the wheel speed. If the car has overall gearing that runs much over 115mph in 4th I will use 3rd gear on street tires. Competition tires that are speed rated I will run in 4th.
Keep in mind that I have a Superflow Dyno that is loaded, so I can program the test to run a few seconds longer in 3rd so the turbo can maintain max boost.