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Old 04-14-2013, 02:17 PM
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Originally Posted by F-BIRD'88 View Post
Why not employ a WOT throttle switch to switch on the retard at say 1/2 to 2/3 throttle
Or a simple hobbs manifold pressure switch say 3psi so you don;t have to "remember"
Hey, that's a great idea! I am going to try that. My blower goes instantly to 10psi at full throttle then climbs to 11 so I think that switch would work great.

BTW, just got home from the track. AFR is 12.7 under boost I think it's lean! But at 3500 cruise it is 11.5 so I think I am going to pull 4 numbers from the primaries and add 6 to the secondaries. What do you think?

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Old 04-14-2013, 06:13 PM
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Increase all the jets till you get the best track MPH. and look at all the plugs
Then go back and retune the primarys part throttle as required.
The afr gauge is just a guide. (to avoid excessive lean)

You may be actualy cruising on the idle circuit. may have opened up the IFR a hair too much now.
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