|
There are two easy things that you can do.
First is a low-restriction, cold-air intake so that you can get the most out of more expensive future mods and a gain of ~5HP (and a bit of an increase in gas mileage) now, and new exhaust. For every 10°F you cut from the intake temperature, you can expect a 1 to 1.5% increase in power and torque. This may not seem like much, but in that tiny, low-output engine, a gain of even a few horses or lb-ft is a big difference. If you can route the intake pipe from the stock location to either below the grille or under the fender, you can get as much as a 40° drop on a mild-weather day.
Right now, the exhaust system is designed for low cold start emissions and not for power gain. I don't know of any aftermarket manufacturers who produce headers, but a tri-y system would be preferable to the current setup.
If you want a ~5% increase in power and torque with a slight decrease in economy, you can experiment with timing advances of up to 5 or 6°. I wouldn't go much beyond that, but you can try if you want (at your own risk, of course.)
|