I have finally come to the end of the 1st reading of this thread. Wow, what a wealth of knowledge!!
So here is my unique situation...
Truck is a 94 base model 22RE 4x4 with a 4" suspension lift and IFS.
Engine is a 2 coil completely torn down 3RZ. It's all there, all but the ECU and harness. (Free for lifetime storage of engines and tranny's for a friend.)
My friend, a LONG time Toyota guru of mine I got the motor from is leaning towards running the 3RZ off of the 22RE ECU setup, at least temporarily until I need to swap out the harness. I have been looking and researching, trying to translate both journeys into $$$'s.
Plan A:
22RE ECU - 94 with bigger injectors and harness, bigger V6 AFM-running a dizzy style 3RZ engine. I would have to still slice in sensors, but I won't need cam sensors or dual O2's, basicly setting up a 2.7L 16V 22RE. I know I can tune it with the AFM, I have an A/F split second gauge in it now to help me tune.
Pros'- I have the harness. The rest is tried and true mechanical stuff. Less money- I would just need to swap out the 2 coil head for the dizzy version and then build the engine like normal. ($5-600) Engine harness plug n play to the truck
Con's- Less HP. 22RE low res ECU. Batch fired injectors. Harness is on the wrong side. will need to extend all wires to swap sides.
Plan B:
3RZ ECU - This is the tried and true path of sourcing a harness and matching ECU. ORS harness or similar to adapt it to the truck.
Pro's- documentation(it has been done). More HP and stock upgrades path. easier parts sourcing.
Con's - Pricey! (stock 3RZ harness $650. ECU 200-250. ORS harness- 650. Harness is on the wrong side for my truck.
1st, is plan A even a viable plan?
2nd, where the heck do you get a harness for resonable prices from?! If I can find a 97-2000 engine harness and ECU for a deal this is the prefered method for sure! I also want a 2nd 22RE harness so I can hack it up and spice it into the 3RZ harness befor it ever goes near the truck- I know I can do this- I wired a MS 2.2 into a 74 Corolla with a 2TGTEU in it!
Thanks for your input!!!
P
