So i guess, here's what I don't understand, I have an 07 spec b, built it, ran multiple levels of power on multiple setups/ both 93 and e85, etc. I have to come to find that other then single avcs its exactly like a GR sti, so what exactly is the hold up? from what i have been reading multiple people have been able to build a cobb equal flex fuel kit for 100$ couple threads on nasioc about that. All the kit does is use a PWM and voltage regulator to transform Hz of the sensor to 0-5v and sends it to the tgv sensor input...... It seems to me if the car uses the same ap, same coding, same fuel setup including lines and fpr placement it should just work. Those threads also have coding in them for using flex fuel on the tgv sensor and a display for the ap. So if anyone can help explain whatever I'm missing or not understanding?