Just got a VWR from awesome on my eddy. Not cheap.
Took their advice as didn't want too much noise...i am an old fella! They reckon itg is noisier.
I am happy, crisper response, less delay on spool up, perhaps a little better mpg?
Lots of heat soak. Inevitable on what is a 300hp fwd, smallish hatch? Its never going to be a m3 is it?
Imo there is perhaps a lot of overly pseudo tech/science, particularly when you see the results in the metal. No escaping the fact that its 3ft of bent pipe and a few bits of plastic. Little skill or art when compared to proper manifolds. However, I will go with what works.
As the man above said, its intake temp that matters.
Part of my stage 2 plan, as/when overtime payments allow...