Peitz Performance Tunes on Instagram: "Here's a good one for you guys wanting to know the best bang for the buck mods on a C8 hands down! Get yourself a @dsxtuning flex fuel system and @hptuners ECM unlock with one of our RTDs and tuning service and pick up real power! This video displays those gains and goes into some of the specifics of why this works and with otherwise stock components (yes this car has an exhaust but exhaust is not a factor). Want to get flex and add some power to your C8? C