What wideband O2 A/F gauge would you recommend?

[Grumblebuns]

The LM-2 at almost $600 may be more than I need for tuning the Strombergs and later the Mikuni conversion. The basic AEM A/F system has provision and wiring for a DB-9 connector is under $200. For our basic carburated cars is there any reason to pay all of the bells and whistles that the more expensive unit have? I found this YouTube video of an AEM system on a classic Mini.

https://www.youtube.com/watch?v=BbXO_l4srP4&list=PLVI6drejxJECGwyBigXJilhD8uFKf1vpL&index=7

I'll also check out Vintage Technology to see what Keith is doing

[Kendo]

BUT, do you even have a computer that has a DB-9 connector? (Just joking, RS-232 will never die)

[Kendo]

BTW, I'll be getting one to tune existing Strombergs and a future Mikuni conversion. So I'll watch yuor progress with interest.

[jbcollier]

When you are jetting a carb, you don’t do “everything” at once.  You follow a process.  I work on one thing at a time.  A quick glance at the gauge is all that is required.

[Clifton]

The basic AEM A/F system has provision and wiring for a DB-9 connector is under $200. For our basic carburated cars is there any reason to pay all of the bells and whistles that the more expensive unit have? I found this YouTube video of an AEM system on a classic Mini.
/quote]

I used my AEM WB on two carburated bikes, 225cc and a 400cc, taped it to the bars. All AEM's have a 0-5v output but you need something, an ECU to accept it to log.  IMO logging really isn't needed with a carb. It is helpful if you want to log say a drive or WOT run and look back, great on efi when you can change so many load points but on a carb you won't have rpm and airflow data overlapped with it. The LM1 did/may still have input's for rpm and configurable 0-5v inputs for TPS etc but the cost isn't justified for the need. Logging is also good if you have enough power that glancing at a gauge at WOT takes too long to be safe.

What jbcollier said is so true, "A quick glance at the gauge is all that is required."