99delsol

ive searched and found nothing,can somebody tell me where on the ecu can i hook up my a wire air/fuel guage,what wire is it and on what plug.if you know please give me some help thanks i have a auto meter guage red,black,purple

xNOBOOSTx

im am unsure where to hook it into the ecu, but everyone that i know that has installed one has wired it to the o2 sensor. but they never throw accurate readings unless you have a wideband. more less just a light show. and the purple wire is the one you will need to hook up.

99delsol

do i hook it up to the one on my downpipe or my exhuast o2 senser.thanks

Caoboy

for a more accurate reading...source the o2 wire on the ecu. and yeah, no point in really having it, unless you have a wideband, which you would be running a separate o2 sensor for it anyways.

xNOBOOSTx

if you do decide to wire it up on the factory o2 sensor wire it on the primary one.

Slammed_am

isn't it just going to bounce around eratically and only really work at WOT off a stock o2 sensor?

xNOBOOSTx

yeah pretty much. that is wh ymany people say its just a light show. some think it will tell you if something is seriously wrong but i dont believe it. but some people like having the sweeping lights in there face all the time while driving.

99delsol

i know its a light show but i already have the guage ,then why not use it ,anyone know what wire on the ecu i hook it up to?

Bond

um well sort of actually. if you ever have tested ur o2 sensor with a multimeter you would know what it would kinda look like. basically a cold o2 goes from .5-9volts i believe. been awhile since i have tested one (prolly a couple of months) it will do this when it's in closed loop and will do this at a very rapid rate. once it's warm the volt's should hold a steady reading at idle and go up as the rev's rise. stock o2 is a very limited way of reading your a/f and i would suggest money is well spent on a wideband as it will help if you ever go N/A build or FI.

just remember closed loop is by taking preset values for a/f and not sending back a signal. once it's open the o2 and ecu communicate and adjust the a/f as needed.