08-05-2005, 06:26 AM
a CAI will probably add about 3-5hp at the most. I found with the CAI that my throttle response was better. The stock intake system on the SPI was pretty restrictive so I can just imagine ford restricted the crap out of the intake on the duratech's as well.
Do the duratechs still have that lunchbox style resonator on the back of the exhaust?
Do the duratechs still have that lunchbox style resonator on the back of the exhaust?
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