horton72

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

JeremyT

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