I run a bottle of injector cleaner through my engine at every oill change. I usually buy the Valvoline or the DuraLube. The best way to use it is to carry it with you until you need to fill up with gas. Empty the can of injector cleaner into the almost empty gas tank and then fill it with gas, this way you make sure the cleaner is fully mixed with the gasoline.
<< Yes, it is bad for high-performance and turboed cars. >>
And out of what part of your arse did you pull this? Your statement is completely false. I use it im my SHO and I used to use it in my Turbo Eclipse. The only possible way it could be detrimental to HiPo cars is if the cleaner somehow lowered the octane rating of the fuel, which it doesn't. If you are worried then just drive a little more conservatively on the tank of gas you use the cleaner. I build a lot of engines and it is easy to tell, upon teardown, the ones that used injector/fuel system cleaner as the valves are much cleaner and free of buildup.