Throtle linkage question issues at wot

roost

New member
Is it possible to over rotate the plungers on a 160hp pump? I have always had a issue where at wot it will fall flat on it's face past 2800rpm, turbos go from making 60psi+ to 30psi in a hurry. 3/4 throttle it's fine and will hold boost and power past 3200rpm.

I'm running a ,make plug, 191's, 4k gov springs, s362 with spring gate inplace of the canister style, s475. No boost/drive pressure leaks or anything of that sort. Question comes up because my throttle linkage is made diy, so I wanted to be sure that isn't my issue. Another thing worth mentioning is there meant to be some kind of snubber valve before the afc housing? Input would be much appreciated.
 
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