Hello, I currently have an Autometer lowband 5775 installed in my Camaro which to me is just a light show that tells me nothing and I want to switch to an Autometer wideband analog 5770. Does anybody know if there is anything else that needs to be done to do the switch such as any different wiring. Any input would be greatly appreciated. I tried to look for installation instructions for the 5770 but couldn't find any. Thanks.

 

Appears you are under the impression you can just replace the old gauge with a new wide-band gauge. Doesn't work that way.

You will need to add a sensor bung to the exhaust to accept the wide-band Bosch sensor that is included with the 5770 "kit", then wire from the sensor location to wherever you have your current gauge installed. You can't just hook a wideband gauge up to a narrow band sensor. You have to keep your narrow band sensors for the PCM (unless the "kit" wide-band controller has a 0-1V narrow-band emulator output). The PCM can not run off the 0-5V output from the wide-band.

Then there's the issue of where are you going to locate the sensor. If you put it in one branch of the exhaust, you will only read one side of the engine, which is what your current setup apparently does. If you have a Y-pipe and put it in the exhaust at a point after the two branches combine, you are reading the O2 content of the combined exhaust, so you would not know if the A/F ratio one side of the engine was starting to go off spec.

The best way to do it is a dual wide-band sensor controller.

 

Fred, I believe I already had a bung welded into the ypipe, where can I get the dual wide band controller? Again, thanks for your expert help, you are a vital asset to this board.

 

The dual wide-band setups are expensive.

http://www.rpmoutlet.com/mt.htm

http://www.altronicsinc.com/pages/o2alert.html

You could buy 2 of the Innovate MTX-L self contained gauges for less than the above.

http://www.innovatemotorsports.com/products/MTS.php