EdwardC507 wrote:Thanks Brian.
Good to hear that the 1.6" will be available, even if the need is more for the RHD cars.
I did find a few threads where it looks like the 1.8" does provide more power over the 1.6" on a 2.0L motor. I guess the old narrative of losing torque is still hanging around.
The results showed there is torque shift, but not torque loss. So, peak torque at higher rpm with the bigger header, but the curve was still better everywhere. And more power everywhere wins. As a result we are working on next generation of the big 1.8 inch header. The current 1.8 was made to really fit the 2.5 motors, fit on the 2.0 is pretty tight to the engine mounts. New version of 1.8 header will have more clearance everywhere for both 2.0 and 2.0, that's likely a few months from being ready.