spring
k hodges, i'll answer... ... . don't do to a stock truck. you'll set off over boost codes, and the ECM will defuel the truck. the mod is for folks running fueling/boost boxes, to get more boost. this helps burn the extra fuel, and lower EGT's. most boxes have a "boost fooler" to trick the ECM. i was asking for future reference. i think a Comp or Raptor is in my truck's future.....
garrett, thanx. i've already got an assortment of springs in the shop. waiting to save the bombing $$ for the box... ...