What are some reasonably priced, and relatively easy things i can install to give my 2012 nissan altima 2.5s more horsepower and torque esc..
Short answer, nothing. The obvious is solid center braided spark plug wires (Nology) & E3 spark plugs, MSD distributor cap, & 89, or 91 octane gas. Phase 2 would be a cold air intake with K & N air filter, & a cat back big tube exhaust system, If availible for your 2.2 Nissan. And or have a muffler shop with a tube bender machine custom make you a single 3" exhaust pipe. Use a 3" inlet & outlet cat converter & muffler too. I like Raven products. phase 3, add a MSD ignition box for more intense spark. Tube headers are a must for more torque & hp. Note: a single 3" pipe will flow more exhaust than duel 2" pipes. See nothing is cheap for more hp & performance.
Nothing cheap when it comes to adding horsepower. Don't buy into the K&N airfilter hype either. That might be worth 1-3 horsepower. Not 4-7%
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