I just got charged $411 to do a $150 compression leak down test on a 4 cylinder engine...the only explanation they gave me, as to the cost, was they had to remove the coil packs. Really? Thats literally 4, 8mm bolts and 4 wiring harness clips, that sit on top of the motor...then they left snack and drink trash inside my car...just expected a whole lot more, being charged $155 an hour...wont be taking anything else to them.