

HKS hi-flow 60mm Catted Front Pipe
Has anyone installed a catted front pipe with everything else stock on a +22 BRZ/86? I am curious if you notice any sound and/or performance gains. Ultimately, I would pair this front pipe with a catback or axle back .
Wondering if there is value installing it now in the mean time.
According to HKS, this front pipe:
Even with the catalyzer, it achieved 30 % greater flow capacity at the flow rate of 150L/s compared to stock during the flow bench testing.