Chris - I found the same thing. Early 2.5 motors had much more gains from cat back and chip tuning then the new 170 motors.
Senior Member
Chris - I found the same thing. Early 2.5 motors had much more gains from cat back and chip tuning then the new 170 motors.
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James Brostek
MARRS #28 ITB Golf
PMF Motorsports
Racing and OEM parts from Bildon Motorsport, Hoosier Tires from Radial Tires
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