throttle body spacer

are these any help? ive found one for $80 which is prety cheap (less than a cai) and they say up to 20 hp which realisticly prob means about 5hp for my gsr. i dont know im just guessing, but any advice on the situation?

I personaly think they are a waste of money, but I have seen no real proof that they gain good hp or not. So it would be up to you I guess if you want to risk $80 and a liilte free time.