Yeah replacing rod bolts is a gimmick also. If I turn the boost up over a certain level I can guarantee it will bend the rods up as I've done it a few times. Usually everyone blames the rod bolts as a failure cause they spin a bearing and the rod breaks sending pieces of bolts everywhere. The spun bearing is due to a bad tuneup that causes detonation beating up on the upper bearing half till it finally looses its crush or a oiling issue due to starvation. Its all about the tune 99% of the time. And when mine bends rods it still runs and you don't really notice a difference in normal driving until you load it. Or the knocking noise from the bottoms of the pistons hitting the counter weights on the crank.