air fuel gauge ?
If I remember correctly, the way the air/fuel ratio is hooked up with the full sweep setup is pretty inaccurate. If you really want to know what your air/fuel ratio is your going to need to get a wideband with a seperate 02 to give you readings.
I could be wrong, but I remember not buying one for this reason (and just waiting for when I REALLY need a wideband 02 seperate, as they are fairly expensive).
I could be wrong, but I remember not buying one for this reason (and just waiting for when I REALLY need a wideband 02 seperate, as they are fairly expensive).
Understanding how things work is pretty important in trying to have sucess on any kind of budget. Once you understand how the factory narrowband O2 system works you will understand why a narrowband gauge results in a light show.
Trending Topics
Cliff's notes is the injection varies AFR between rich and lean to keep the Os crossing past 450mv which is 14.7:1 AFR the ONLY ratio where the stock O2s are accurate. It varies the AFR actross that point so it can tell the O2s are functional.
Narrowband gauges are useful in tuning carbed engines, that is all.
Narrowband gauges are useful in tuning carbed engines, that is all.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
TECH Senior Member
iTrader: (3)
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
Yea, when I asked about doing this, it was the same thing :\ And after researching it a bit, I found some graphs of the voltage and what AFR corresponds to that, it turns out that at stoichiometric AFR it's a fairly steady voltage, but when it's above or below it the voltage change is so minimal it's hard to tell. I'd say between 14.5-14.9 you probably get an accurate reading, but that'll be it :\ See graphs:
Cliff's notes is the injection varies AFR between rich and lean to keep the Os crossing past 450mv which is 14.7:1 AFR the ONLY ratio where the stock O2s are accurate. It varies the AFR actross that point so it can tell the O2s are functional.
Narrowband gauges are useful in tuning carbed engines, that is all.
Narrowband gauges are useful in tuning carbed engines, that is all.
Thread Starter
TECH Veteran
iTrader: (246)
Joined: Mar 2008
Posts: 4,984
Likes: 1
From: Chicago/Crown point
thanks again as i thought wideband is the way to go
now do you know of any company that makes a 2 1/16 gauge that blacks out when off that is a wideband. i couldnt find one
now do you know of any company that makes a 2 1/16 gauge that blacks out when off that is a wideband. i couldnt find one
