Tuning carb with wideband.

[88Fox]

Looking to see who tunes there carbed setup with a wideband, I have a few questions. I have been looking into the Innovative LC1 kit but wondering should I run a sensor in each collector? What recommendations on kits does anyone have? Thanks for looking.

[Ethyl Cat]

Use it all the time.
http://www.ngksparkplugs.com/product...x.asp?mode=nml

[Mikestang]

^ That is a good one

[Zap's 85 GT]

I have one permanently mounted to my a-piller. Once I got rid of the Autolite plugs and started running NGK's, The AFR's started matching what the plugs were telling me and tuning was much easier.

https://www.youtube.com/watch?v=L4lUM_OYj98

[gt4494]

Whats wrong with the vacuum gauge as a tool.

Its called "Old Skool"

[Ethyl Cat]

Whats wrong with the vacuum gauge as a tool.

Its called "Old Skool"

I use one all the time, just not for tuning a carb.

I can see it for the idle mixture screws and idle ignition timing.

How do you use one to pick the correct main jets for a 12.5-12.8:1 afr at WOT? Cruise 13.5-14:1? PVRC size? Air bleed sizes? so on....

[gt4494]

Got it, I was thinking idle mix.

I was lucky and had a friend that raced all his life. He set my carb up with jets and secondary vacuum springs. Is it the true air fuel ratio? who knows? but it doesn't stumble, hesitate, puts a great power curve and gets 22-23mpg on the highway.

He learned how before we had such advances as wide band AF tools and definitely knew his stuff.

[Saturn V]

You can see my thread on this topic ... maybe some of what is posted there will help you: http://vb.foureyedpride.com/showthre...180-AFR-tuning

I used the Innovate LM-2 meter. It's not setup to be a dashmount gauge like the LC-2 that you mentioned or the NGK AFX unit, but I don't really want to try and look at digital display numbers that are bouncing around while I'm making a full throttle run. I keep the meter in my glovebox with the cables tucked away. I like the LM-2 because it has the capability to log data and then I can view the trend on my PC later (there are some screenshots in my thread above) or the log can even be played back on the meter. Also, I added the engine speed pickup so that I can log and view trend data for AFR and engine speed together. You can find the single O2 sensor LM-2 complete kit (with case and some extras) for $325 on eBay, or a little less if you just want the basic kit.

For more money you could buy the dual O2 kit and place a sensor in each collector, like you mentioned. But I tend to think that the single sensor kit is enough for a carb application, since I don't know that you could really tune out differences between banks. But if you really want to check both sides, just install another bung and plug on the other side and then swap the O2 sensor to that side for a quick check after you've tuned the first side. Good luck!

[88Fox]

Thanks for all the replies guys, going to be going the innovative route I beleive.