[CFMCNC]

The only way to evaluate firing order is on the engine dyno with Wideband O2 sensors on each cylinder.followed by track testing.Gains from correct firing order are in thermal balance,crankshaft loading and smoothing intake manifold traffic.We have done testing where a firing order swap along with staggered jetting has shown gains and or connected to slight manifold fixes to balance cylinder to cylinder AFR.Bill C.