No, dont think so. Mike at Ice Ignition has never mentioned that. Currently I have the dist unlocked. Timing is set at 28* idle and as soon as i increase the rpm starts advancing and by 2000rpm is 38* and increase rpm further starts retarding, then by 2500rpm is 35* and stays as rpm is increased from there. I could just lock it out again setting it to 36* idle and 33* retard with any rpm. Had same issue with small block msd dist and same box. Added a crank trigger and timing rock solid steady at any rpm. I may just get away from mag pick up all together. thanks