MSefi.com read only forum (Jan.15,2018)

I want to put dual exhaust on a flathead v8 engine. With megasquirt, do you put an 02 sensor at the end of both exhaust header as well, or can you only use 1? If it is recommended to use 2, how do you wire that up to the megasquirt? I guess technically, the 02 mixture should be relatively similar on ...

if you were sourcing an intake manifold, or fabricating your own, how does plenum size affect engine performance, assuming that throttle body size and intake runner diameter/length were fine? Can a plenum be too large for a given application? Is there a rule of thumb/formula for determining its ...

Finally, I found a canadian vendor! Anyone have experience dealing with them?