Hey guys i have a 93 f150 5.0 that unfortunately has speed density. I put long tube headers on it and cannot tell a difference between leaving the o2 sensor disconnected and having it connected and only having it read off just one bank. Does anyone know for sure if it will adjust itself just fine reading off the one bank or if it needs both? And I'm looking at doing one of two things to make a little more power. March UD pullies, and putting on some 1.6 or 1.73 ratio roller rockers on it. On the UD pullies, has anyone used them and noticed if it makes an impact on the A/C and how big of an impact on the A/C performance? And same question for the power steering pump? On the rockers, i know that going to a higher ratio will cause more lift and duration in small amounts. Would it be a big deal for the default stock tune of the ECU to handle and compensate for? Even if in one header only. Or disconnected? Thanks for any info on one, or both things

 

Put in an H or X pipe and put the oxygen sensor there so the computer can see both sides. That's the best thing to do.

 

X2 for the rockers, the ecu should have no problem compensating.

 

Yeah I figured an extra .030's lift or so wouldn't throw it off.