Is an air fuel ratio gauge a good carb tuning nstrument? im looking into getting the dakota digital one. http://www.dakotadigital.com/Detail....er=ODYR-13-2-C
It requires a 3-wire o2 sensor. since im running true duals, could i put one in each pipe, and put in a switch to change between left and right? also, what are the 3 wires on the o2 sensor for., any help is appreciated, thanks

 

The 3 wire sensor is nothing more than a heated O2 sensor. A standard narrow band O2 sensor isn't good for tuning, only the wide band ones are good for that.

 

i'd say an A/F isn't the way to tune a carb, but it could be an asset in tuneing a carb

 

then what is besides looking at plugs?

 

what is a wide band o2, whats the difference?

 

A wide band reads actual air/fuel raito. The stock or narrow band just switches from rich to lean (about 350mv-700mv) and the computer adds/reduces fuel to keep it swinging in that range.

 

Eyes Ears Mouth and Nose. NO fingers though.

seriouselly black smoke out the tail pipe or crispy white plugs dont tell you somthing then theres somthing wrong.

of course what happens when you smell it running rich but the plugs are white as lean?

Do some research, and you'll find that your running so lean its causing a mis-fire which causes the rich smell. interesting eh?

the point is, there is no magical tuning device. although widebands are coming down in price and becoming more practical, the average home user still cant afford one when that money would be better spent elsewhere, in most simply carbeurated N/A cases this is.

Just use the force and you'll be fine.

 

A vaccum gauge does wonder whens tuning a carb. Go to advance and get a vaccum guage, plug it into a vac line on your carb and tune for highest vaccum. It does wonders. I put a vaccum gauge on mine which was pulling 15lbs after the cam swap...managed to lean it down quiet a bit and now its pulling 21lbs of vaccum.

car runs perfect. Still runs slighly rich in the secondaries but Id have to adjust the jets to fix that.

 

A vacuum guage is one of the best and cheapest tools you can buy. It's a good aid until you learn hear the difference an adjustment makes.

 

a vacuum gauge it is then, should i get a gauge thats mounted on the interior, or just one that gets plugged in temporarily? whats the average price? thanks everyone

 

Either one will work but a temporary one is easier to see underneath the hood were you need it.

 

Average price is between $10 & $20 for a vacuum guage. Get a hand held guage, they are mostly used at idle and for the times you need it for WOT or part throttle you can tape it to the windshield.

 

thanks everyone for helping me, i will be getting a vacuum gauge.