7 is the lean hole on our trucks with 5 comming in close second . Wide band should be put in on the drivers side pre cat . Like Rich has done .I'm wondering if it would be better to run the wideband off the passenger side. From past experience, the passenger side will run a tad leaner because of the fueling setup. With an aftermarket fuel rail it wouldn't matter as much unless the fuel pump couldn't keep up.
Interesting....all my logging, and yes, I'm looking at the narrow band o2s...not the best...indicate that bank 2(passenger side) is ALWAYS the leanest. I know the factory o2 sensors aren't as accurate as the wideband sitting on my table, but my logging says passenger side, which I would have thought also, being the fuel supply is on the bank 1 (left) side and it then has to go through the skinny crossover to get to bank 2. But I don't have the experience with anything but my own truck. But I also have the luxury of installing mine at the y since I don't have cats.7 is the lean hole on our trucks with 5 comming in close second . Wide band should be put in on the drivers side pre cat . Like Rich has done .
It has mostly to do with the firing order if I'm not mistaken. Cylinders 5 and 7 are right next to each other and fire almost sequentially. None of the rest of the firing order is like thisWell that bites. Wire routing is easier on the drivers side too.
You can buy bungs and caps online.
Hey Matt, assume 5 and 7 is just because of intake design and nothing else odd?
Hope all is well. Keep hearing good stuff from everyone that stops by and has you do work !
Nope, just left the factory settings. When I watched it on EFI Live Scanning I was so happy I wired it right.Have you adjusted the analog output speed of the LC-1? Sometimes it can output too fast and cause the ECM to think its not switching correctly.