First of all, to merge all the discussions since the 2010 is coming out is kind of unorganized but that is just my 2 cents. Second, I have noticed since installing my sts turbo on my 1995 z28 October of 2007, within a min or 2 of idle, the engine is already close to operating temp. I have also noticed that it gets alot hotter than it used to (given it has always ran hot). Would a radiator flush help this or is this normal with boosted cars. What are some suggestions. Thanks.

 

Stock thermostat?
Turbo cars usually have a good amount of back pressure, and that makes the motor work harder. What are you calling operating temp? Reading from the gauge or from the computer with a scan tool?

For reference
I have an electric pump, 160 stat, stock rad, stock fans always on low, high at 175 if below highway speeds, and I run a pretty consistent 170-175 with normal driving - and see 190-200ish max when abusing the car.

Turbo motors will run warmer.