what do i choose hks hi power 409 exhaust or blitz nur spec r?

 

I say the Blitz because I have one and love the noise it makes. Nice and loud with a deep rumble
But not an informed opinion because I haven't heard the HKS... but doubt anything sounds as sweet as the Nur Spec.

 

if had to pick one it would be the blitz

 

From a mapping point of view the HKS flows better.........