Project-evo

Sup guy's
i bought a used utec and tuner lite unit from Mr stock and everything looks good plug the utec and starts right away . but im having problem with the tuner box as it does'nt have any wiring diagram for it . does anyone knows which wire goes to battery and ground? any help would be great. btw i've used the search and nothing came up and check the tuner manual and also nothing
Thanks
Herb

MalibuJack

iTrader: (5)

There should be a red and black (or white) wire.. Thats the power and ground.. the other cluster of wires goes to the sensor.

MalibuJack

iTrader: (5)

Oh yeah.. Red is the positive (power) white or black is the ground.. There should be three "Groups" of wires on the tuner pro, two groups on the Tuner Lite.. The thick one is the O2 sensor, the thinnest is the power feed, and the middle sized one is the Knock sensor (on the pro)

Project-evo

got everything working now thanks for the info . one more question i took of the factory 02 sensor right after the cat and use the wideband sensor is it ok to do that ? of do i need to weld on another bung?

fuzzychi

iTrader: (3)

You should have the wideband sensor on the downpipe instead if possible.

MalibuJack

iTrader: (5)

I put my wideband bung on the downpipe.. you can put it in the rear O2 sensor after the Cat, but the readings will be different, and removing that stock sensor will mean a perpetual CEL for the sensor thats missing...

In other words, you probably should put a new bung in for the sensor.. It should be before the Catalytic converter, some people say to put it as close to the turbo outlet as possible, others say to put it towards the rear of the downpipe before the catalytic converter.. I say, whichever location you can find to fit it..

Project-evo

Thanks for the info . i'll weld it before the cat delete
on the remote switch i have extra 2 wires coming out from the switch *red and green* what is this wire for?