Technical > Spud Miller's Cave

HI SPEED LEAN OUT--DO I NEED ONE?

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masracingtd1167:
You guy's are right ! I have never seen a dyno win a race but the ones with the most horse power usually do ! We dyno my friends comp motors at the same shop every time so we know if one is better than another . We can also try different things like valve lash and cam timing and know right away if it is better or worse . Just my 2 cents !

Curly1:
I have a High Speed lean out on my motor is a help. But it is an Enderle hat and it may be different than yours and not much help on some. On the difference between dyno and track there are a few things different and you have to compensate for them.  What I did was set up my injection on the dyno and I used the O2 sensors once I got the best performance on the dyno. Now when you get to the track you have forced air into the hat and it will need a little more fuel which will give you better performance. But you are still shooting for same numbers on the O2 sensors.

Point is the dyno is a great tool to help you get the best ET but remember the goal is still ET and not dyno numbers. You can learn things in one day on the dyno that may take you months at the track.

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