Installing A Air/fuel Guage

[twoquik]

hey guys i want to install a air/fuel guage can someone tell me how to go about wiring it up?

[Kennedy]

What brand is it? Different colour wires for different brands.

Basically it's one wire for power, one wire for ground and one wire piggy backing off the O2 sensor wire coming off the dump pipe. Best to make the join at the ECU pin out. (number 29 I think...can someone please confirm?)

[leech_]

what kennedy said is spot on. Don't try and piggy back the wire off the 02 sensor do it at the ecu

[Frunknmont]

Whats likely to happen if you were to piggy-back of the O2 sensor wire?

[Kennedy]

Not sure why but I had a mate that bridged it at the O2 sensor at the dump pipe and it shorted his stock ECU. Besides, it's much easier to run a wire from your dash/ A pillar to your stock ECU rather than run a wire through your firewall and onto your sensor.

[paulr33]

the guage is useless, throw it in bin. it will give you nothing useful

[Let Me Drive]

i agree with paul i have one and it does nothing good but jump all around when driving and nothing much else, get a oil temp or a water temp they are much more usefull in drive and knowing whats going on under the bonnet

[paulr33]

exhaust temp would be more useful also, anyone know a cheap (under 200) exhaust temp gauge? and sender ?

[leech_]

If you have had a look at the wire on top of the 02 sensor it is thin as you would want to be very careful you dont cut it off.

i dont completly agree with paulr33 on this issue. yes in most cases it's not that great but when you are giving it to the car it does give you a good indication of how rich/lean your car is running however in day to day driving its crap like "let me drive" said it does just bounce all over the place

[paulr33]

it will not give you an accurate representation of "rich" or "lean" im afraid. its too narrow and slow for anything "human" usesful. it is for ecu closed loop feedback to save fuel ecomony and nothing else. i certainly wouldnt use the value reported on the guage for anything other than a giggle factor when you boot it, cos all its going to do is show "rich" when you do, which if course is fairly obvious, of course its rich.

try a wideband sensor in the car with a guage and watch the difference, then its worth it. by all means do it, just dont expect anything useful from the guage other than rich lean bouncing

[ctjet]

the guage is useless, throw it in bin. it will give you nothing useful

what r you talking about?? i heard, depending on the brand, it can give you up to 15kw @wheels performance gain!!

[leech_]

interesting point their paul and it does make alot of sense. Oh well i am stuck with mine so i guess it doesnt matter