Your car is fine. It's got a great stereo, and you've been driving it long enough that the seat has that perfect butt-groove going on. You've been pretty diligent about taking care of it, with regular oil changes and trips through the car wash. But wouldn't it be nice if it were, I don't know, faster? Maybe had a little oomph when you take off from a red light? Maybe, just maybe, your car could even pass another car while going uphill -- with a little tuning. We're not talking about making your car a queen of the drag strip; I mean, that's expensive. Or is it?
There are easily five things you can do to pep up your commute or turn in a respectable time on the quarter-mile, and it doesn't have to cost more than your mortgage payment to do them.
This is the first thing just about anyone will tell you when you say you want to up your horsepower. It's kind of like those minty-fresh gum commercials with the ice swirling around, and the price is only a smidge more than a pack of gum. A kind of big smidge, but still. The idea is that cold air is more dense, so more air gets into the cylinders to mix with the fuel. More air means more combustion, and more combustion means more power, to the tune of a realistic 5- to 7-horsepower in a typical engine. This only works if the air intake is the limiting factor, however. If your engine is already sucking in big breaths of cool, fresh air, then try one of the other tricks on this list.