it replaces the line that runs from the gas pedal to the throttle body so that it dosent go through a bunch of pullys. If you have ever driven a focus thats why the response is so much better
Hey over the weekend i heard about straight line kits. Is there one out there for the p5 cause id like one but cant find one. im also pretty dumb in this area, so dont rip me a new one for just asking something stupid
never got the CEL either... we did disconnect the batt though.... but that was halfway through, anyway i just installed Injen last weekend and it sounds sweet... specially above 4k. And i like the hiss it gives when u turn the car off.