yeah i wouldnt buy it. i throttle caused my car to go in limp mode like once a month, its not really the products fault, its something with Honda's OBDII port. its so crappy. anything that goes in there needs to be perfectly tight and secure otherwise you will get a bunch of codes and limp mode in your car
I never had any limp mode issues with the i-throttle (and isn't the norm, we've sold a few hundred of them over the years).
But what the SprintBooster / I-Throttle are going to do is enhance the throttle signal. They won't add additional hp but just enhance throttle response/sensitivity. I do think it makes the car drive much differently and I enjoy it. I'd recommend it, but you can definitely save a bit and go with the Weapon-R I Throttle.