well I'm putting down a little over 250 with no hondata stock injectors and fuel pressure is way over 100psi at full boost. My car is tuned VAFC. I have had good luck as far as who I had tune my car. He was able to make very nice numbers with low boost. My injectors are not going to last long at all with the kinda fuel pressure I'm putting through them right now. Every once in a while it has trouble turning over. Once you get bigger injectors the fuel pressure will drop. Jan is right thought 440cc will get you to your whp goal very easy and make tuning a whole lot safer and easier. I wouldn't get such small injector. I would go for at least 550cc (they cost the same I think anyway) In the future your going to want more power and have to change your injector again. With the Hondata you want to get the Hondata 200b w/boost and the injectors. I would look into a intank fuel pump too. I'm but to get 720cc injectors because I do plain on building the motor one day with the Hondata and a intank fuel pump in the next month or so. Even 550cc will get you to around 350 easy.