What A/F Gauge do you run

For full throttle, the track will work.

Daily driver and tuning for street duty, they are a great tool. You can't get a read on what the engine is really doing at partial throttle points. A great example is a 950hp carbs. Run great at idle and full throttle, pig rich at cruise point in between. I know guys that have had this issue and think the car is tuned great, until they actually get a good tune up!

Tune ups will generally fall in an AF range for idle, cruise and WOT. The item will pay for itself pretty quick if you have a high 11's cruise AF and get it to run in the 13+ range.

I placed a bung about 10-12" behind the pass side tti collector flange on my Dart.