There is zero data out there to support any of the claims made concerning 12 port injectors. None. Aside from people's butt-dynos, and I've never been shown the NIST calibration stamp on a butt dyno so I don't trust them, especially given people are generally comparing brand new chinesium 12 port injectors vs their multi hundred thousand mile, multi decade old gunked up factory injectors.
Every time I have pressed Raffi about dyno testing his injectors he has evaded the question and not actually done it. The original claim was they make more power and low end torque. Then they were claimed to improve idle and throttle response. Then fuel economy. Every time something does not pan out or people ask for proof of things that the sellers know is not possible, the goalposts change.
I will believe it when someone proves - comparing new 1 or 4 hole injectors to new 12 hole - ANY of the above claims, using actual, calibrated test equipment and rigorous testing procedures. Until then it is bullshit and the sellers are just making money off of the uninformed masses by selling chinesium injectors.
A sucker born every minute.