GemBlueCivic Senior Member Joined Jan 14, 2017 Threads 16 Messages 56 Reaction score 11 Location Mass Vehicle(s) 2017 Civic Coupe EX-T Vehicle Showcase 1 Mar 22, 2017 Thread starter #1 what difference should i be expecting? should i go with 87 or 91octane? should i expect less lagg now? Sponsored
what difference should i be expecting? should i go with 87 or 91octane? should i expect less lagg now? Sponsored
dc2turbo Senior Member Joined Jan 27, 2016 Threads 44 Messages 2,918 Reaction score 2,074 Location usa Vehicle(s) civic,teg Mar 22, 2017 #2 91 if you want the most power but it will run with 87