Hello all, I was wondering if anyone had any ideas on my sled. At 6500 feet it will only tach 7950 rpm and at 9000 it will only tach 7650 rpm. I have the new update and I am running an mbrp can. I changed the springs in the primary and secondary but besides that it is all stock. Last year it would tach 8250 but later in the year I noticed it was not taching. Any help would be greatly apprieciated.