The concept of this turbo kit was originated while upgrading our own S13 240SX. While searching for parts to make the car better, we quickly realized that there wasn't much support for this vehicle, even though there is a lot of potential in its powerplant. We began using universal parts, sometimes custom-fabricating adapters to make them work correctly. Eventually, we found that the universal parts, while effective, could not take advantage of the engine's full potential. So we began to develop our own parts and had only the best manufacturers make them for us to our specifications. The result is a line of parts that we've been able to combine for different stages of performance, some made by other aftermarket tuners and others custom-made for us by leading names in the performance car industry. The final product is the GT PRO 240SX Turbo Kit.
  • Garrett T04B-R turbocharger: Our turbo units start off as a stock T04B then we custom modify the turbine (exhaust) side to provide better flow at higher RPM.
  • Cast iron exhaust manifold: We use a cast manifold as opposed to a welded stainless steel manifold because they are much more durable than even the best tubular manifolds.
  • Turbonetics Deltagate wastegate (7psi): The spring on the wastegate will limit boost to 7psi unless a boost controller is used.
  • Downpipe: The downpipe comes to you unassembled...
  • Front mount intercooler and intercooler piping: Our kit comes with a massive intercooler that is front mounted. The core alone, without end-tanks attached, measures 24" x 11" x 2.75"!
  • BOV: We use a Bosch blow-off valve. We've had very good results with the Bosch unit. The internal spring is strong enough stay closed at idle yet soft enough to open at part-throttle/low boost levels (which is a good thing).
  • Fuel Pump: Walbro in-tank replacement high-flow fuel pump. This is not an add-on inline fuel pump so it doesn't take any room in your engine compartment or under your car. And it's not a cheap in-tank unit.
  • Fuel Management Unit: The FMU keeps stock fuel pressures during off-boost operation and adds 7psi of fuel pressure to the fuel rail with every 1psi of boost.
  • All related hoses, lines, clamps and miscellaneous hardware: We supply all of the things you'll need to complete the installation of this kit. You won't find yourself driving to the auto-parts store to find a bolt, nut, bracket or anything. If it's needed to install our turbo upgrade kit, it's in the box.
    • A complete kit, this stage will give around 240HP at the wheels and includes all necessary hardware and parts to turbocharge your 240SX.
  • ARC2: The ARC2, designed and built by Split Second, is by far the best dedicated fuel controller we've ever seen. Included in the system is a replacement 83mm MAF meter. A further upgrade is an even larger, freer flowing 87mm MAF meter.
  • Fuel Injectors: Replace the factory 285cc units with 385cc drop-in replacements. Injectors are by RC Engineering or Blitz and can squirt enough fuel to support up to 400hp.
  • To be able to get any benefit from this upgrade you must turn up the boost, but you probably noticed that we don't include the boost controller. The reason we don’t include the boost controller in this stage is because we don’t want to sell you something you don’t want. Prices vary for different boost controllers and we know different customers will want different boost controllers. Here are the units we stock but keep in mind that we can get pretty much any boost controller you want. Whatever you do to control your boost above the wastegate's 7psi, we recommend using an electronic controller. They are much more accurate than those less-expensive manual controllers (they're cheaper for a reason!) and much more reliable because they provide the same boost all the time. Some of the more sophisticated versions even correct for changes in elevation. Manual controllers tend to vary boost when driving in different weather conditions. Driving on a cold evening will give you much different boost levels than when driving on a hot day, even with the manual controller set at the same setting.
  • HKS EVC IV HKS EVC EZ GReddy Profec A GReddy Profec B Apex AVC-R
    • Stage 2 makes it safe to turn up the boost by adding more fuel than your factory injectors would normally provide and is good for nearly 300HP. At this stage we recommend strengthening your bottom end (pistons, rings, rods). Stage 2 consists of all the parts from the Stage 1 kit plus more.
  • Pistons and Rings: $749 - Rings are manufactured by ROSS to custom GT PRO specifications utilizing custom wrist pins and spiral lox (stock wrist pin sizes also available upon request). Rings are by Total Seal.
  • Rods: $795 - Our rods are manufactured by Pauter to custom GT PRO specifications. 4340 chromoly "X" beam construction. Rod set includes ARP fastening hardware.
  • Also available: Cam regrinds Custom porting/polishing Full machine work available.
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    Stage 3 includes all of the parts from Stages 1 & 2 as well as the necessary parts to strengthen your bottom end. If you’ve followed our upgrade path, you’ll have enough fuel and airflow to support boost levels of up to 25psi! But the stock bottom end absolutely will not survive at these performance levels.
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