what is the best way to get HP other than a turbo or a swap. I already have a full catback and a cold air intake. i have a hyper ground system. I also have a capaster for my battery so my car's computer is always reading to the best of it's abilitys. I don't want to put headers on because i just plan on putting in a turbo later anyways. by the way i have a 94 si with a d16