I was wonderis is the car stronger with O/D (overdrive) on or off like for city and street driving is it better to drive with 0/D on or off and what about when im well you know "R" someone is it better to put O/D on or off...

somehow i feel that my maxima is not achiving it potential.

 

it's an autotragic, of course it's not achieving potential. overdrive is good for fuel economy on the highway, but what do I know, I've never bought a car without a standard box.

 

Just leave it on. At the track, take it off, and check the FAQs for tune up tips.

 

i leave it of when i go up hills or if i need to speed up real fast