EP3R - Worth upgrading catback from 60mm to 70mm?

[mryangtastic]

Hi ClubITR!

As title says, I have a 60mm catback exhaust, the Fujitsubo RM01A.
Great exhaust from all 2 years of it being installed.
Quiet enough to be classified as 'not too bad' by the HWP.

Recently a lot of parts for EP3R came up for sale and I've snatched up a quite a haul.
If everything gets installed, it would end up as...

• GruppeM intake
• RRC intake manifold + Skunk2 TB
• PLM header + 100cel cat
• Fujitsubo RM01A
• Hondata KproV3

Based on these 'breathing modifications', would a 70mm catback be recommended prior to tuning?
Does the 70mm have THAT much more potential?
Is it possible to keep a 70mm quiet?

Many thanks!

[mryangtastic]

RRC intake manifold and throttle body on. Tune is happening late next week.
Really looking for your opinions right now.
This car will be used as a daily driver.
I have my eye on a 70mm titanium catback exhaust, but I haven't convinced myself to want it enough...

[tinkerbell]

if you think you will be doing 160kW+ you are dreaming...

[scrowetom]

bigger the better

sourced from my opinion