just found a think on ebay that you buy, i think it s a resister that you wire in to the air flow meter to confuse the ecu in thinking that is getting cold air which i would think that it would widen the injection pulse giving the engine more fuel .. has any one heard of this ?

We have seen and heard of lots of "Miracle" power gainers on ebay and around the traps... case of buyer beware... chances of gains = minimal, chances of potentially doing or risking longer term damage = much more likely.

IMO you would do better to avoid the gimmicks, save up and do something to do the job properly ;)