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Im not sure I like the idea of tuning late opening secondaries with more pump shot or squirters.

If your running a single plane you could end up over richening the front 4 cylinders while leaning out the back 4 cylinders.

While it may eliminate the bog, overall you could hurt its "launch" performance. By X amount of cyl being rich and X amount being a bit lean. If your running a DPlane intake the effects will be less.


Id tune the secondary bog with the Springs first, witch you did.

Id like to add that even though the Bog is now gone. Id would still try a spring one size heavier at the track to see if it effects ET.

Just because the bogs gone doesnt mean the secondary opening rate is at optimum.

But it very well could be. At this point with the Bog gone, your probably near the top of the carbs Tune

With the combination of Squirters, pumps, pump cams, air jets, main jets, and in your case secondary springs, Do we ever get that perfect carb tune. Probably not but we can get her darn close. mike




EDIT, Id run as is for now, let the kid have some Fun, mike



Thanks Mike and appreciate the input

Rickster