If it is a gas or diesel vehicle performance tuners are the cheapest reliable power and they are unreal.
The best way to gain knowledge is to study, observe, and learn.
the best way to gain intrest in a sport is by playing it
you wont gain any horsepower, you will just gain more noise
Only you can determine what is best.
by upgrading your engine.
Free flowing exhaust, nitrous
You need to eat something, preferably sweet. That is the best way to survive! You can think of weight gain later on.
what can be added to gain horsepower to the air intake of a 2.2L Pontiac sunfire?
How much horsepower gain from 2 super 44s flowmaster on a f 250 with an 351 windsor
In your 5.7 the best horsepower option would be to supercharge it. They current make a supercharger for the 5.7l hemi if that's the engine you are talking about. Intake and exhaust do produce more power, but however change the overall torque bands v Horsepower bands, therefore you may loose some horsepower in some rpms and gain some in others. Therefore a turbo charger or Supercharger will be the best money spent for more horsepower!