Going for a different aftermarket may result in additional cost, such as the need to buy a power commander and have it dyno tuned. The akra full system is expensive but it includes the air filter and the mapping. This subject has been on the forum for sometime and a few of us have had responses from various manufacturers but so far nothing has been forthcoming. The dates we had been given have come and gone so my guess is that something will be released in the coming weeks.