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As far as advice, loesch8102's advice was pretty sound. Intake, Header, Exhaust is a great start, as he said, unless you are going the turbo route. This is because they will all be replace and useless if you get a turbo. The Intake and header are replaced with the turbo manifold and related turbo intake piping. The 2 1/4 exhaust you would have put on as part of the intake, header, exhaust route would need to be taken off for bigger piping, as the turbo would require such. As for intakes, I perfer Cold Air Intakes over Short Ram Intakes. For every 11.1 degrees you lower the intake temp, you get 1% more horsepower. The Cold Air Intake hangs down into the area near the wheel well and sucks in cold air from outside the engie compartment versus the hotter underhood air of the short ram. So, fpr example, if the underhood temp is 110 degrees, and the ambient (outside) temp is 60, degrees, thats a difference of 50 degrees, which is a 4.5% increase in Horsepower. This is because cold air is more dense, hence more air molecules per cubic inch of air. This means more air molecules beucase of the greater air density when combustion occurs. An Intercooler with Turbochargers functions under the same permise, it cools the air so that it is more dense, creating more power. As far as turbo's, if you get a CARB exempt kit like one from Greddy, you should be fine emissions wise regarless of the state you live in. A Greddy Kit costs $3249 and has everything you need expect the intercooler and Blow-Off Valve (BOV). Greddy's Type-S BOV is $227, the Type-R BOV is about $250. The intercooler will run about $600-800. That should put you at or over 200 hp, whether you have a GSR (b18c1) or an LS (b18b1) engine. Greddy makes kits for both. The Turbo they use is a mitsubishi TD05H-18G, which is rated to produce over 400 hp. This means you can upgrade later by adding bigger injectors, fuel pump, etc, building the internals properly to handle more boost, and then increasing the boost. Speaking of boost, an engine with stock internals can usually handle 7-8psi. Some people say the LS engine can handle 12 psi on stock internals, but I still would feel safer at 8 psi. The GSR can handle 8 psi safely on stock internals, don't try 12 psi on stock internals with the GSR engine. If you up the boost past the setting the kit uses, (8psi) remember to increase injector size and replace the fuel pump as needed. I know this is a very breif run down, I hope it answered some questions. If you have more, let me know.
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07-27-2003, 12:55 AM
