4JJ1 Hotside Turbo Kit

4JJ1 Hotside Turbo Kit – 44MM / 55MM Upgrade

Complete hot-side turbo kit to suit the 4JJ1 Isuzu Engine. Capable of performing 250HP+ at the wheels when fitted with +30 injectors, and just as happy to push 180HP with stock injectors and a ECU Remap or Aftermarket tuning module. Show off your engine bay with a high mount turbo.

This kit includes the following items,

• 44MM or 55MM Turbocharger (Orientated for direct fitment)
• High mount BRD turbo manifold
• Oil feed Hose
• Turbocharger gaskets
• Wastegate actuator (adjustable)
• Studs & Nuts

Why upgrade to a wastegated turbo on your 4JJ1? 

The benefits outweigh the negatives here. The 44MM Turbocharger is an extremely responsive turbo which provides optimum reliability when it comes to turbo upgrade choices. It’s capable of performing 250+HP at the wheels when fitted with +30 injectors, and just as happy to push 180HP with stock injectors and a ECU Remap or Aftermarket tuning module. Utilising a wastegated turbo removes a lot of variables when it comes to tuning, as turbo boost pressure is controlled by the wastegate and fueling only. This offers a premium when it comes to reliability as there is significantly less to go wrong inside the turbocharger.

Should I go for a 44mm or 55mm turbocharger?

For most people, we recommend the 44mm turbocharger. This is going to be suitable up to 280HP and 600nNM of torque. For those looking to send it a little harder, the 55MM turbocharger options are good for those who want 300HP+.

There are some things to note regarding fitment: 

• A high mount turbo kit is not a direct bolt-on, there is some custom work required to fit.
• Must fabricate a new dump pipe to suit, The dump flange is supplied.
• Turbo outlet and inlet piping must be fabricated to suit.
• Tuning is required with a 44MM Turbocharger conversion