planning on getting 270cc injectors for my 2000 gsr.....will these make a difference for my n/a setup.....i have AEM CAI, DC 4 2 1 header, Greddy Evo 2 catback, skunk2 stage 2 cams with crower dual valve spring and titainium retainers.....the 270 cc injectors will be install with AEM fuel rail and pressure regulator.....

 

Your 240cc injectors are fine. 270cc isn't a big jump and more of a waste of money than anything else at this point in time.

 

if anything, you should just get some DSM 450's they will be cheaper and have more potential, either way, you will need to get some tuning so they run low under normal driving and high under acceleration

 

Im running rc 370cc with similiar mods like you have.......my tuner recommended me to get those for my setup to he can play with my fuel.......370 will flood your engine if not tuned..........i think 270cc are no better then 240cc....I would get somewhere in the 300+cc