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I don't think it works that way. Take two completely identical cars, one which makes 130hp and 60ft-lbs of torque and another that makes 60hp and 130ft-lbs of torque. The 130hp car will win, although the driver of the one with more torque will SWEAR that his feels much faster. Many racecars make 1000s of horsepower but have very little torque to speak of. Horsepower, or more specifically horsepower to weight ratio, does win races.
Not a good comparison, but I'll play along. If the 130hp car makes it's peak torque higher (much higher) than the one making 130ft-lbs then yes the 130hp will because the latter is making it's peak torque at a high rpm, making 130hp. The high torque car is making a peak torque down low and falls off (sounds like a turbo deisel )
I started with a Magnaflow exhaust. No major improvement. Then added the JWT. Big difference. I agree with those who advocate a less restricted air path before the JWT.