LOL! That's what I did wrong then! Time to get on eBay and find me a Turbonator!

Seriously though, the Road Race Motorsports "fuel controller" was actually a Split Second product, re-branded/relabeled, with their own custom programming pre-loaded with supposedly "optimized" settings for my Genesis Coupe. There's nothing I could see wrong with the concept. It modifies the signals in what should be a sensible manner. It's just that today's ECUs are so smart, that's not good enough by itself. It gives a temporary improvement; enough to install the box and do some dyno tests and "prove" it works. But that's about it.