So, I'm getting ready to do the F20b swap to a 99 Lx and I had already read in the forum that the swap should be a direct fit but also read about some issues like fuel pump and temp gauges not working, no my questions are the following. I'm planning on using a P28 chipped ecu with F20b base map, do I need the OBD2a or OBD2b jump harness? Also, if I use this setup Will I run into the same issues with the fuel pump not working?

Any help will be greatly appreciated

 

i guess no body knows!!

 

You will need the OBD2B harness. As far as the fuel pump, not sure - never heard of that issue. For the temp gauge, I believe that's correct when you use a different ECU than stock on those models. I know it's true for Hondata anyway.

You're gonna need to do better than a basemap to get any benefits from your swap.