Bolt-on Upgrades.

AIR FILTER
A performance intake system consists of a free-flowing filter element and a larger-than stock tube. It's Primary purpose is to allow more incoming fresh air to reach the combustion chambers at a higher velocity. The specially designed filters restrict the engine from sucking up dirt particles. They sound good too. (baaaaaawwp)

HEADER / EXTRACTOR
Headers are designed to expel the exhaust gases as efficiently as possible. The positioning, size, and length of the primary tubes determine the flow characteristics of the spent gases. A 4-2-1 headeroffers greater low-end torque over a 4-1 header, but the 4-2-1 lacks the high end characteristics of 4-1.

EXHAUST
Aftermarket exhausts feature a free-flowing muffler with larger diameter piping. The piping is also mandrel-bent, which means that the diameter of the piping is maintained throughout the bends. Remember Rawle told you an exhaust system is as efficient as its norrowest point. Got That…. This greatly improves the flow of the exiting exhaust gases and raises the noise coming out of the muffler.

IGNITION
The ignition system should only be upgraded if you have turbocharged your car or you're using nitrous. When the cylinder pressure is increased and more air and fuel are dumped into the combustion chambers, a greater spark is needed. Otherwise the factory ignition is capable of providing the necessary spark to ignite the air/fuel mixture.

THROTTLE BODY
An overbored throttle body increases the throttle response and the amount of air drawn into the intake. With this modification, horsepower is increased throughout the entire rpm band. In order to realize the performance potential of the throttle body, you must have the intake manifold match-ported.

INTERCOOLER UPGRADE
It's a known fact that combustion engines will run more efficiently at cooler temperatures. Turbocharged vehicles always run at higher temperatures than naturally.phpirated vehicles, so intercoolers are used to cool down the air intake charge. With a colder, denser intake charge, more power can be realized.

NITROUS OXIDE
Nitrous can give any type of vehicle instantaneous horsepower. The extra oxygen molecules in nitrous oxide actually enhance the burning of the fuel. Also, when nitrous oxide is injected into the engine, it must absorb a large amount of heat in order to transform into a vapor. That drastic change in temperature causes the intake charge to become denser, which in turn packs more of the air/fuel mixture into the combustion chamber, resulting in more power.

CAMS
Cams can be reground to change the lift and duration of the lobes. You can go mild or wild when choosing cam specs. Selecting a wild cam usually means that the idle is going to be rough. A mild cam will idle, but it lacks the high-end pull of a wild cam.

CAM GEARS
Cam sprockets are definitely worth the money because you can control the intake and exhaust events. Any combination of advancing and retarding will change the power curve. The general rule of thumb is that by advancing the intake cam, you can increase low-end horsepower. Retarding the exhaust cam will increase high-end horsepower.

TURBO
A turbo can be sized small to kick-in at low rpm, but it will lack the high -end of a larger turbo. The trick to sizing a turbo is to know exactly what type of performance you're looking for. A turbo designed for the dragstrip will perform well at the track but not on the street.

Also check out our Glossary of Terms or refer to De Forum for interactive help from people in the know.

Questions or comments? let us know - email us at info@trinituner.com