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Tuning Now power increase after installing a slug power kit in my M3

Just had a slug power kit installed in my FX M3 (600 mm) and there is no power increase after the kit has been installed. With 185/160 reg pressure and macro wheel 16, micro on 5 and the valve at 4+ lines in am able to shoot the .217 JSB Knockout at 940 FPS which is the same as before installing the slug power kit. Anyone that has experienced the same and any ideas to what cold be the issue?