Turbocharging

Stage One

Part 1 - 2

First of all before you can even start to think about upgrading a turbo some safety nets should be put in place. Think about it: if you’re going to be cramming all this extra air into your motor the only way you can make more power is by lacing the air with extra fuel. Also things like clutches and drive trains will not take kindly to increased power and should be upgraded. My number one key point throughout modifying an SR20DET is to always tune the car appropriately. So if you change your turbo, have it retuned. If you change the fuel system, have it retuned. If you install an intercooler or boost controller, have it retuned. This is by far the safest way to keep your motor in great condition.

Stage One modifications that go hand in hand with a Stage One turbo are as follows:
>Fuel. Injectors, fuel pump and fuel lines can be upgraded. A fuel pump and a rising rate fuel regulator at the very least. Be careful not to max your standard injectors out, s13s will max out around 180rwkw with s14/15 or GTIR motors running up to 200rwkw in some cases.
>Air-filter. Get a pod inside a ducted air box to eliminate heat soak from the engine bay.
>Intercooler. A large front mount intercooler will suffice; usually custom piping is added at this stage just because it is usually essential unless the cooler comes in a kit specifically made for your car.
>Boost control: Just grab a manual bleed type and you will be happy enough. Be very careful when adjusting not to over boost the turbo. Monitor the boost with a boost gauge.
>Blow off valve. Get a recirculating one if your motor needs to be road registered and there are applicable laws otherwise dump to atmosphere ones are fine. Be aware of whether your running MAF or MAP type computers (more on this later).
>A new clutch can go in now or later. I will talk about it in step 2.
Standard ECU re-map
>3 inch high flow exhaust from the turbo back.
Stage One continued...

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