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Old 08-17-2016, 06:11 PM   #1
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I just had my new transmission from Triple Edge performance put in my 2007 Grand Prix GXP and before the new tranny my RPMs at 65 was about 1700 and I just took it for a ride and now at 65 my RPMs are now at a little over 2500 and of course my gas mileage went from 28 mpg to 13mpg. I used tap shift also and it seems to be going into 4th gear any ideas of why this is happening
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Old 08-17-2016, 10:19 PM   #2
 
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This is the Help section for Help with the forum software, account issues, etc.

You also posted this topic in the correct spot here:
https://ls1tech.com/forums/ls4-perfo...2324-rpms.html
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