sorry ive been posting so much i just hae alot of questions im only 15 so i want to know how to fix up my ride but to my question to lower the temperature at which the engine runs at do i get a fan switch or a cooler thermostate to run the stage 2 hyperchip chip?

 

Both, actually. The thermostat determines when the coolant begins to circulate through the radiator and it will do it's best to hold onto that temp. However, with a fully warmed up engine if you are idling or just driving around at low speeds there won't be enough airflow through the rad to cool it and stay at the stat's opening temp- temps will creep up. That's where the electric fan(s) come in. In stock form they don't turn on until about 225*F (A/C turned off). That's quite a bit warmer than the stock stat (195*) and a LOT hotter than an aftermarket stat (160-180*). So you need something to turn the fans on at a lower temp than stock to match the lower stat temp.

Various companies (including Hypertech) make lower temp fan switches (they screw into the pass. side cylinder head between cylinders #6 & #8).

If you have a TPI engine (2 fans) an aftermarket chip MAY have the fan turn-on temp lowered in the programming (the ECM can turn on one of the fans without waiting for the temp switch). The fan switch will still turn them on when it reaches it preset temp regardless of what the ECM is doing.

If it's a TBI engine (1 fan) the fan switch is the only thing that controls the fan (unless the A/C is turned on- then the fan runs constantly).

 

I have a TBI car and the AC has crapped out on it so I just unplugged it and I use my A/C as a fan swtich.