Got a nephew checking on price to have a friend tune it. Still questioning the need for different injectors though. My 2010 Impala 3.5v6 FFV only has 25 lb injections, 586cc per cylinder, I have 24 lb at 550cc per cylinder. You changed injectors on your HHR and noted no change in performance/economy. Not a lot of money but why spend $100 when not needed. I'd appreciate it if you could send me the info I need for the 5-10 tables for them to fill in. No idea where you are but anywhere close to Iowa I'd be willing to drive to you and have tune it if I could make it there and back in a day. I'm in East Central Iowa. I like the idea of just turning on FFV maps and tweeaing the timing to show nothing else is needed to enable a FFV car.