Definitely a gamble, but at least on Reddit, theyād develop a pretty poor rep pretty quick if they were a scammer. Much easier to get away with it on Facebook where your profile can be curated.
I know I'm being pedantic but you cannot claim it improves throttle response when there is nothing to make the throttle body open faster. You're just opening it more (compared to stock), the equivalent of pushing harder on the gas. It really should be marketed more as a pedal position...
Again, what you're describing for this throttle controller is that it has no effect on throttle response. It does not change "how fast the throttle will respond", it's only changing the magnitude. Correct?