Hello guys, I've been trying to clear the P0171 (Fuel Lean) Code on my 98 Prelude, car is running and driving fine. I have looked for the common problems, vacuum leak, restricted fuel filter, etc. This car has an H22A JDM swap. Before I go and dump anymore money into this problem I did some research to see if this code could be caused by running the 4th gen injectors on a 5th gen because they came with the engine. People on forums are saying you need a resistor box with 4th gen injectors and the OEM OBD2 wire harness and P5M ECU. I wanted to see if this was true. or if there are any other areas I should check with a H22A swap. or should I just go to OEM testing procedures with fuel pressure checks, etc.
The only thing I remember swapping over from the USDM engine was the oil pump.
I will answer any question regarding the car and swap I know I probably left a lot of info needed out.

(first time ever posting on a forum, hence my message being all over the place.)