sunsetorang01TA

How much leaner are the readings in the tail pipe vs in the pipes on an LM-1. I realize you get more accurate results in the pipes, but I tune multiple cars so I need portability. Also i've heard that cars without cats it doesn't matter if you mount in the pipe or in the tailpipe. Is this true? Thanks

Frost

iTrader: (45)

My LM1 is more portable carrying just a sensor to go in a bung rather than a long cable and tail pipe assembly of questionable accuracy. Just put the cars in OL and pop out a front O2; problem solved.

sunsetorang01TA

Wait you can do that? I thought you had to wire it up a certain way for the wideband to act as a narrowband. If so glad i know this haha. Won't be spending 80 bucks on that dam tail pipe assembly bracet. So you can just take out a front o2 and replace it with the wideband o2? Something sounds to easy here lol.

JonCR96Z

iTrader: (33)

If you were going to use it as a narrowband you would need to wire it up, but just for tuning just swap them out and replace when done.

sunsetorang01TA

Wow! Didn't know that. Well thanks guys I appreciate it. Looks like you've saved me 80 bucks lol.

sunsetorang01TA

Ok so I was thinking about it and if I pull one of the front o2's and replace it with the wideband o2 won't it run a little more rich since the car would be in open loop when i'm tuning giving slightly off readings just like the tail pipe method? I realize that at WOT it won't matter but part throttle and idle I would think it would? Also would I have to unplug the passenger side o2 since the driver side would have the wide band o2? Thanks guys.

JonCR96Z

iTrader: (33)

You can only tune in open loop. You just have to disable closed loop via the tune, the enable it when your done. If it's rich in open loop than the tune isn't right.