When you say worked on, what did they do? When I got my supercharger installed I needed a new thermostat.
Did you install the TRD
thermostat for your car, different manufacture or just OEM. Did you have to run a cooler stat or was stock OEM fine.
I know TRD
just came out with one for our cars, which I will be getting soon, since it drops the degree about five numbers. It's pretty exspensive, about $70, but it's worth it.