skewing the dyno??

StreetSleeper said

So from what you are telling me,
as I try to understand,
that when he tested the same engine twice,
and the carbureted version made more top end horse power than the fuel injection setup,
the carburetor was flowing more fuel than the fuel injection at the same rpm,
(I believe at the very top end of the rpm range)
-which illustrates why the carburetor makes the increase in horse power for the same engine over the fuel injection dyno run.

Please forgive, just trying to understand why there would be a difference with the same exact engine if rpm was the same.

Thank you very much.

Click to expand...

If you know who Ben Strader is (damn super smart guy) when he built his first engine that made as much power as a carb, he basically had a fuel injected carb.

How the fuel leaves the nozzle (booster) or injector and how that fuel is vaporized as it gets to the chamber is where the power is.

I suggest you go to Straders YouTube channel and find the EFI beats carb or EFI equals carb video and watch it.

Also, if you haven’t seen the Jon Kasse video on what the fuel looks like in a running engine you should search for that.

All engines with carbs run on the fuel puddle. You can see this phenomenon on the dyno in the O2 sensors.

Of course, dynos are just play toys according to those who never use them.