How Much H.P.
I Have a 2003 3.8 v-6 mustang. I have installed a cold air intake, reprogram with diasport programer using thier settings and installed a water pump pulley and 42% crank pulley about how many hp do ya'll believe I am Producing. the car has 20.500 miles on it.
In the future as money allows I plan on installing dual exhaust.
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