Very very peculiar problem. I have a 1987 190e 2.3-16V and it is supposed to go 0-60 in 7.8 seconds. Odd tho how it takes 13 seconds!!!! I have a whole new exhaust system because I figured the catalytic converter was plugged which brought the time down to 11 seconds. I checked the camshafts and the lobes are fine. Any idea what this could be? Possible distributor cap or the camshaft timing? Would love to hear some input on this and if someone has had the same problem or not.