FS: '07-11 Yaris side exit exhaust!

[bladesmith6]

I think it has been discussed before, but isn't 2.25" a bit big if you are non forced induction? are you going to offer 2.00" as well ?

[MBSPE]

Originally Posted by bladesmith6

I think it has been discussed before, but isn't 2.25" a bit big if you are non forced induction? are you going to offer 2.00" as well ?

The mean flow of the exhaust is already dictated by the front half of the exhaust (lead pipe off the manifold & cats). You could run 3" after all of that with minimal influence on the performance compared to say 2". You get the initial gain of some couped up power from upsizing over the factory 1.75"...after that there is minimal change. Sometimes running a slight over size exhaust tubing after a lower flowing portion can stretch the torque curve higher by a smidge by creating a small venturi effect.