I know it means fuel supply but I replaced the fuel pump and still get it. I also bought an extension to pull the O2 farther away from the header because it said that would cause the 43 code. That didn’t help either so now I’m kind of lost and don’t want to replace everything and still get the code. Any advice would be greatly appreciated
Step 1 would be to go through the troubleshooting procedure for that code in your Factory Service Manual (Helms Manual). No sense in replacing random things in hopes it fixes the problem and better to use the same troubleshooting procedure that the dealer would in order to pinpoint the problem.
Also, I’m not sure where you read something about moving the O2 sensor but I’d be careful with that info. Perhaps there’s more you’re not telling us but in general the O2 sensor is placed where it needs to be. 90-91 and 92-93 Integras have different placements for a specific reason. So sometimes when doing swaps and conversions you DO want to move it, but you also use a different sensor when you do that. Moving the sensor to a different location could cause problems.