hey guys long time no hear havent had any prolbems with my new engine until yesterday driving through missouri going up a good size hill truck downshifted and then loss of power pretty much fell flat on its face let off the gas went back into over drive no prolbem THEN later that day started from a dead stop could not get the truck to go over 2000rpm once again fell flat on face no acceleration at all check engine lite came on took it to the shop this morning after sitting all night engine lite still on headed for dealership lite went off still have the prolbem if i over accelerate it looses power in the downshift sometimes cant get over 30mph any ideals totally stock lb7 except hi flo muffler