The Nissan 300ZX Twin-Turbo has one of the most powerful engines created for the best Nissans.The VG30DETT has huge amounts of potential. This engine is putting out 300hp and almost 290 foot Lbs. of torque stock! The twin turbocharged and inter-cooled engine lacks very little. Read on to find the 5 most cost effective configurations to give you the most horsepower for your hard earned dollar!
Throttle body modification:
The throttle body modification is not going to be the largest gain in hp in the world, but the best part is, it's FREE! In case you missed that, yes, its completely free! All you need for this modification is a metal file or a 10mm wrench (depending on what year 300zx). All you have to do is simply remove a nut or a bump of molded aluminum that is sitting right by your throttle cable. This bump or nut is preventing your throttle from being able to open completely. By allowing it to open completely you've increased your air flow which increases your horse power.
Upgraded air filter:
An upgraded air filter is the most basic of all configurations. Adding a higher flow filter is going to allow your Nissan cars [http://www.jdm-4u.com/nissan_cars.htm] engine to consume a much larger amount of oxygen then the stock air box. Imagine attempting to run a mile while using a straw to breath. It's not a lot different for your car if you modify the car and not the air filter.
Upgraded exhaust system:
An upgraded exhaust system is the same concept as upgrading your air filter. All the air that is being consumed by the engine needs to be evacuated. The problem that many people run into is they go about doing this the completely wrong way. BIGGER IS NOT BETTER! Having an exhaust that is to large for your car is actually going to hurt your 300zx's performance. You should have no more than a 3 inch system without you plan on running somewhere around 1000hp! This problem is somewhat obvious, but one that very few people think of; the larger exhaust drops exhaust temperatures considerably. Having a lower temperature means the air traveling through the exhaust system is going to be much heavier and then harder to move, which hurts your engines performance. Installing the correct exhaust size is going to give you the correct temperature of exhaust and will evacuate the air effectively. Contrary to what many think, a car does not actually lose horse power because it has a large exhaust because of a loss of back pressure. It looses horsepower with a large exhaust because of turbuable and the cold din air.
Upgraded computer chip:
An upgraded computer chip is one of the easiest definitions. Upgrading the chip will enrich the fuel curve. This gives your car a bit more fuel to support the added power. Some also say it will help cool the pistons. In addition to the added fuel, the JWT chip maximizes the engine's ignition timing and also tunes the cam timing. Most of the chips out there will have a couple additional features like raising the rev-limiter 200 rpm, and eliminating the top speed governor. Having an aftermarket ECU is nice because of the ease of calibration for future modifications like higher boost levels.
Boost controller or boost jets:
Boost controllers and boost jets are the recommended way to increasing your boost pressure. Adding a boost controller essentially tricks your waste gates, waste gates vent boost preventing the car to just run at 8 psi. The boost controller or boost jets trick the waste gates into thinking that there is less boost than there really is meaning you will have a quick spool up time and a large increase in total boost pressure. Boost pressure equals power. Running higher boost pressure is only capable after an ECU upgrade. Investing in a turbo timer is also a good idea when running higher than stock boost, as a turbo timer will help cool your turbos when its time to shut down.
There are many other upgrades to the 300zx but this will get you down the road with the least pain to your pocket!