when i mash the gas it takes off as normal but after about 5 sec. the boost drops down to 7.5 then rises back to 12 and back down continues to to this up to the shift. it does his through out all 5 gears. now if i hold the pedal half way i boost to 7.5 and it stays there till the next shift. if i continue it has the same resolt through 5th gear.