Quote: Originally Posted by
nwright99 
I just bought a 2007 Magnum SRT-8 and was loking for any free or cheap mods that made a difference?
Congrats on your purchase!
Diablo Predator Tuner, Cold Air Intake and a high flow catback exhaust for starters. These are relatively inexpensive add-ons that will improve HP and fuel efficiency. You may also want to look into a 180 degree thermostat.
For an exhaust, I like the Zoomers. They aren't exactly cheap but the sound is awesome and I did get a few hp gains and better fuel efficiency. Call Ron at 1-800-ZOOMERS. Or go to
Zoomers Exhaust Works - Performance Exhaust Systems, Exhaust Tips, and Cat-backs and listen to the before and after.
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2005 Dodge Viper SRT10 Roadster
K&N Cold Air Intake
2007 Dodge Charger SRT8
Option group III w/sunroof, Mopar CAI, Zoomers