Quote
A wideband o2 sensor would be nice but you probably dont want to spend that kind of money.
I'd install a vacuum gauge...

X2

The cheaper A/F gauge will only tell you if you are running rich or lean at any position, otherwise it will cycle between lean and rich in its normal operation. I imagine if the carb was running rich/lean at idle you could use the meter to tune the carb until the meter cycled between lean/rich.

I find mine usefull to keep from wasting fuel when taking off or climbing a hill and I don't need to have the throttle down, i.e., using just enough gas to accelerate w/o pegging the meter in the rich.

More than tread lightly. Leave it like you were never there, nor anyone else.
'90 X-cab 4.88's 33 BFG AT's, rr ARB, Headers, Ignition upgrade, cold air induction.
'91 X-cab 5.29's 315's BFG MT's, rr ARB, custom bumper and flatbed