But Id like to take some guess work out of it. Isnt there a tool now that simply gives a tailpipe reading?
If there is such a tool...it wouldn't be a simple one. Too many variables: engine displacement/compression, head/manifold type, ignition timing, transmission/drive ratio, vehicle weight, original carb specs, induction method, emissions hardware, etc. I've bumped up the jets of my vehicle's Q-jet to 73s (from 71s), but kept everything else basically stock. I had my mufflers replaced with SS Magnaflows, but kept the stock collector and tailpipe size at 2-1/2".
Been researching. What I remember reading about is a wideband O2 sensor. Anyone using one of the portable versions?
