procivic
Elite Sponsor
- Joined
- Jan 29, 2016
- Threads
- 123
- Messages
- 1,526
- Reaction score
- 1,136
- Location
- Ventura, California
- Website
- www.procivic.com
- Vehicle(s)
- 2017 Civic Si Sedan, Others
The +9 PSI tune is amazing, especially on this new Si. You could try it just for a bit to see how it feels, but keep in mind you *might* get some clutch slip. We have not on our 2017 Si, but others have.how's it run with the +9? i've got mine set at +6 because i'm worried about accelerated wear/tear from the +9 setting.
Also remember to first drive around for a bit (20 miles or so) after you re-flash with a new tune. The ECU needs some time to get the knock control level down and optimize power for your fuel grade. You should definitely be using at least 91 octane.
Sponsored