Hello everyone,

I'm interested in doing performance upgrades on my vehicle. I'm very new to this sort of this thing, but am willing to learn and experiment. What performance upgrades do you recommend doing to a stock Crossfire, given the following stipulations:

1. Don't want to interfere with my nice Chrysler extended warranty.
2. Don't want to decrease MPG.
3. Don't want to make the ride of my vehicle any rougher than it already is.
4. Don't want to diminish the reliability of the vehicle.
5. Don't want to change the cosmetic appearance of the vehicle both exterior and interior.

Thanks!