has anyone evr heard of wrapping the second o2 sensor with aluminum foil to eliminate using the o2 sensor in the down pipe, i only have a test pipe so the 2nd o2 will throw a check engine. Someone said wrap the 2nd o2 real tight with aluminum foil. i'm about to try it but has anyone ever heard this?

 

I had mine wrapped in aluminum foil and it worked fine. no CELs.

 

i tried the aluminum foil and it work for about 2 weeks then i got a cel..you can get o2 simulators pretty cheap