hey all i am slowly building a 26/30 for my 33. i have gathered that a 26 loom or would be the best option. however is this a job that can be attempted by an amature or should be left for the pros.

also will be upgrading my PFC to a 26 unit. what are you opinion on the D Jetro unit or stick with the standard AFM unit?

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Yeah you should be right to swap the loom out yourself. Basically just involves taking the kick panel out, unplugging the ecu/acc plug and ign/eccs relays. Then remove the plastic underside of the gaurd which will expose the loom behind the front quarter panel, its easier to then removal the quarter panel itself as well just gives you more room to play with. Then just remove both the rubber seals and the loom will start to come through from the inside of the car.

As far as wiring is concerned you can also do this yourself with a bit of guidance. I am not entirely sure but I think you may even be able to plug the 26 loom straight in to the white accessories plug from the standard r33 dash loom which would make it a plug and plug job.

Verify that with someone else but.

As for the power-fc, that all depends on how much power you want to achieve, the standard gtr afm's have enough scope to see you make some decent power, I think 250rwkw has been achieved with them pretty safely. After that you start to walk into z32 or nismo territory which starts costing decent money, apart from the fact that you need to do additional wiring as well.

You do have a menu option in the standard power-fc for 2x rb25 gts-t afm's which are cheaper to setup and will handle just about any power you can throw at them, obviously also requires re-wiring.

Personal preference but I would spend the money on the d-jetro to begin with and be done with it.

Dont know much about the R33 side of things but I am currently putting a RB26 loom into my R32 gts-t with a PFC d-jetro and I've had no problems so far (apart from knock sensors being different thread and not having that part of the engine loom), I dont have all the bits of the loom so I'm going to wire the ballaster resistor pack into the engine loom myself much like the RB20 gtr injector upgrade (in the DIY section). I still have to check that all the wires on the plugs inside the cabin have matched up with the right wires on the car plugs but everything seemed to fit perfectly. Will let you know how I go after Wednesday when I get it tuned.