There hasn't really been any specific time I did a tune up but over the two years I've owned this car I've replaced the spark plugs, plug wires, fuel filter, air filter, supercharger coupler, UIM/LIM, valve cover gaskets, injector o-rings, IAC, belts, a pulley, water pump, oil pump, some vacuum lines, and of course the big one: new crankshaft and bearings, oh and oil changes and coolant changes. Ugh...it hasn't been cheap. I've also checked most of the sensors with a multi meter, and electrically, all are in working order. So realistically, I'm left with either the harmonic balancer, engine mounts, or the transmission.
Last edited by zecc81; 04-30-2010 at 08:13 PM.