i have had it tuned / boosted running 12 psi and got 223.7rwkw witch was good so i put in a second typhoon cold air in take a 4inch high flow cat and i much bigger intercooler k&n box filter had a power run 2 day its running 228.1rwkw and 15 psi. just wanted 2 know if i add bigger injectors and have it re tuned will it really make much more power?