tuning you need to contact Mainstream or their tuner Scttdb411 on here or call him from his website digitalboxtuning.com

Power wise, thats an ok setup, prob in the 175-180whp range, that header is killing you, Injectors are overkill, exhaust is very small

You can run stock injectors on that setup fine. You need to look at AT LEAST a DC JDM STYLE header with a 2.5in collector or one of mine. Ask mainstream about making you a custom 2.5in exhaust as well