Several months (perhaps over a year) prior to turbo charging my 2000 Miata, I plan on Mega-squirting in parallel with the stock ECU, installing 440cc fuel injectors, and using an LC-1 wide band. This seems like a safer way to learn how to tune with a Mega-squirt before the added complexity of forced induction.


My concern is with installing the LC-1 sensor. Would it attach into the stock exhaust? Can I put it in the stock exhaust’s 02 sensor hole? Or does it require a bung in a different spot?

If need be, how do I go about putting a bung in? Perhaps I should go with a used, after-market (OBX, JR) exhaust header for now, until I save for a turbo manifold? Do after market headers have a bung for a wide-band? Is a bung something that can be done without welding?

 

yeah, you can put it in place of the stock o2, The brown is wideband out and yellow is narrowband out but those can be changed. You can run the narrowband out to the stock ecu and read the wideband out

 

putting it in stock location with turbo can overheat it and burn it out

 

Stock is probably fine, until you get a turbo. Then you'll want it about 10 inches before your cat.

 

about needing the wide band o2 farther down line due to heat from the turbo, for those without an extra hole in their downpipe near the cat, like us greddy guys, where can you get a bung and what is the proper size/threading for the bung to have welded in?
-Ryan

 

18 x 1.5

 

Usually the exhaust shop will sell you the bung and weld it in, but the LC-1 should come with a bung.

 

i have a 1.6 with an aftermarket 1.8 exhaust that has the bung for the secondary O2 sensor that i obviously don't have. Im running a test pipe. Am I right i thinking that bung is a nice candidate for my AEM sensor?

 

That'd do mighty well. Just make sure there aren't any exhaust leaks before the sensor.

 

Yep it comes with a bung and a plug.

 

Can the UEGO also be used as a NB and WB at the same?

 

no