o2 sensor

[Charger72SE]

so I can adjust the air/fuel mixture more accurately, I bought a hand-held A/F monitor, so I can check it once a year.

I bought 2 sensor bungs & now I'm wondering if I should install a bung on each exhaust pipe so I can test both sides or if only 1 side is really needed for an accurate measurement.  I'm only going to mount the O2 sensor for the a/f test and then cap the bung for the rest of the year.

why do you think - 1 side or 2? 
if only 1 side, should the sensor be on the driver's side or passenger?

thanks for your advice!!

[Rolling_Thunder]

install it on one side and you'll be fine...   

[Chatt69chgr]

What brand and part number hand held AF monitor?  Did O2 sensors come with it?  Are they the wide band type?

[adrian1]

It is always a good thing to have a permanent one in the car. Innovative Motorsports makes a great wideband kit, which in my opinion is the best. It also allows for retuning after the O2 sensor has seen some age. I think if your going that far that you are make a bung in the exhaust just make it permanent with a gauge in the car.

[Charger72SE]

it's a K&N a/f monitor - no it's not the wide band type, because I didn't want to spend a lot of money

since my car is stock, I didn't want to mount the monitor permanently in the interior.  I figure I'll just screw in the sensor for testing and then cap the bung when not in use.  With a 9v battery, it becomes a hand-held monitor to use as needed and should make dialing in a/f mixture pretty easy & accurate.

[adrian1]

Yes, you also have a point there. The Widebands can get expensive.

[Chatt69chgr]

Summit has one for a little over $200.  And I read somewhere that the std O2 sensor won't really work to set up a carburetor.  That you have to use the wideband type.

[Beer]

Innovate LC1 user here (on a EFI GM).

I intend to set up a Wideband on the charger, one sensor, in an X pipe.

A narrow band is good telling you your at 14-6 or 14.7, and telling you your lean or rich, but your really guessing on how much lean or rich you are.  The Wideband is designed to measure a wider range, so if your tuning and want 12.9 at WOT your not guessing and can make the call to jet up or down as needed.  In addition to the Wideband, a module to log RPM (to sync the RPM vs AFR to a table or chart) is desired.

I am eying the innovate LM-2 for the Charger, as I get closer to getting it running

As for which side, I am not that familiar with the engine your running, but I am familiar with the LSX series GM, and #7 is known for being the likely culprit for a lower end failure, so I would put it (on an LSX on the side #7 is.) Ron could probably tell ya where the usual Mopar lower end issues are commonly found to give ya a better idea for which side to choose.

Here is an example of a EFI Live Log for my Vette on a quarter mile pass

The Yellow AFR_LC11 is the AFR from the Wideband, starts at 14.7 is and goes in the high 11's, low 12's pretty much the entire run.




Jim

[defiance]

I strongly recommend installing a bung in both exhausts.  Generally speaking, day-to-day use of one side is fine, and you can just keep the other side plugged; however, I know from experience that one bank can get much more rich/lean than the other, and that's a TOUGH problem to track down.  Installing the second one is cheap and easy (especially when you're already having one put in), so there's not much reason not to.

Anyway, I also use an innovate sensor, and it's a nice piece.