Yoshimura Full Systems In Stock

[mjezek_imp]

Thanks! Very informative. I don't have a PCV. I'm running the stock ECU with my Yosh exhaust. The PAIR valve is blocked to prevent some of the popping and, at least so far, everything seems to be running smoothly. I wasn't looking for performance increases, though.

You already have a bit of a performance gain due to lost weight and no resistance for the exhausted air due to the missing catalytic converter. So the engine is going to be a bit more rev happy.

Optional:
The PCV will make your engine run cooler, since your air/fuel mix will be more rich, but as you said, if you are not looking for more HP and torque .... you will be just fine.

I personally will make a setup, where i can change the fuel map via a switch. One map will be for my commute and extremely fuel saving ( gas tank is really small ) and the other one to have some fun on weekend rides.