I recently installed the following:
NWOR header,
2" pipe
dynomax muffler
new Toyota O2 sensor


heater resistance is good, I get no feed back voltage at all
Toyota scan tool can't get any data either.


i put the old o2 sensor back in and got the same results.

 

fixed it, turns out one of the wires came out of the plug....

 

well now that the prob's fixed, how's the header and all treating you?

 

hey thats cheating, we wanna know about the header and exhaust, hows the seatdyno feel

 

it's working great! I gained about 6 MPH, less shifting for hills, and it's really quiet witch i consider a good thing. the only compliant is that there is a little bit of a fart sound around 2,500-3,000 RPM in first gear, other than that it's great!

 

ha ha ha ha ha ha ha ha ha he said fart

 

<~~~~~~just farted!