Originally posted by PA 3L SVT:
Except for the lag time in the A/F vs. RPM graph, from the time for the gasses to reach the back of the exhaust system. I dunno how fast the exhaust gas moves or if it makes any difference, but it seems to me (uneducated guess) that the closer you were to the exhaust valves the more accurate your A/F will be when plotted against RPM.
That's a very good point.
Anyone have a radargun to clock the exhaust velocity???
Also would not larger pipe equate to more lag then.
With that noted - I'm sure at medium to high rpms the lag is pretty short.
