well here is my situation....


03 evo with the floowing mods

Atp 3071r turbo kit
3" turboback with test pipe (off raod)
hallman pro MBC
cone air filter
Tomei BOV
grounding kit
and a Custom dyno flash tune(tuned for CAT BACK AND MBC)

i have not istalled
Aem Ems with wide band o2 and map sensor
750cc injectors

here's my issue i really dont want to mess with changing the head studs for higher boost or cams. is there anyway that i can get close to 400 whp..im considering the alky kit and a retune im not sure i want to use the ems on my car
i dont feeel like tunning it all the time. i want the most out of a pretty much basic setup..

i drive my car daily,but i dont beat it up every chance i get also.
any input would be great