ayeitsmikko
Senior Member
- First Name
- Michael
- Joined
- Aug 8, 2020
- Threads
- 9
- Messages
- 121
- Reaction score
- 84
- Location
- USA
- Vehicle(s)
- 2018 Honda Civic Si Sedan
- Build Thread
- Link
I feel like you and I would get along IRL lol. I might get the 70mm either way because apparently the piping diameter is around 76mm for the Catback. Not looking to replace the DP because it throws off a lot of codes from what I gathered from posts in this forum, even if it's catted. Sooooo I'm going to have a stock DP with an Invidia FP and Exhaust lmao.Be sure to post video. For science.
Would wager 10mm shouldn't be that noticeable outside a dyno chart/random feel good? R400 is 70 iirc, if your DP is 70+, get 70 to match?
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