Just got my focus around 2 months ago i bought it from a dealer with 4k miles on it. I knew it has focus sport exhuast and k&n cold air intake. then i found out it was lowered a few inches and I was lookin at the fuel injectors an im not sure if there stock i think there bosch there dark blue with part number 0 280 156 162 other side says 3m60-ba? if anyone knows if there stock or after market please help. And the dealer told me to run 87 octane in it if there upgraded should i run a highed octane? thanks alot