▲ 1 r/GolfGTI
IE is38 Tune: Is E85 flex fuel worth the cost?
I’m currently on the stage 2+ is38 93 octane tune from IE on my 2018 GTI. For those who are on the is38 flex fuel tune from IE, was it worth the cost to upgrade the HPFP and adding the flex fuel harness? Looking at the numbers online it doesn’t look like much of an increase, but does the e85 tune increase the smiles per hour and fun factor that can’t be measured on a dyno sheet?
u/BillyNguyen710 — 1 day ago