Has anyone lost power from inst a 2-1 V&H propipe?? Ive got a 2009 FLHX here at the shop that i inst a SE 103 stage 4 kit back 9 months ago. Bike made 113hp and 107 ft/lbs with V&H power duals with rinehart slipons tuned with SE super tuner. Today cust brought me a propipe 2-1 to inst in place. After tuning it made 102hp and 93 ft/lbs. I just dont understand why. Anyone??