What Are You Doing To/With Your Car Today?
I didn't like the tune on my 273. The wideband showed it was running too lean with an off idle bog. Tore back into it and jetted up one size and changed the PV from 5.0 to 6.0. I checked the float levels, they are good. I move the accelerator pump cam up to the more aggressive setting. I backed the initial timing off by 5 degrees and adjusted the transfer ports and idle mixture screws and changed the secondary diaphragm spring up two sizes stiffer. My hot idle is now good, the off-idle bog is gone and my wide band readings are where I want them for my upcoming road trip. Final road test today before reporting to the hospital tomorrow for more medicine:-(