Same thing i was thinking. i am using 340lph Aem and FIC 1000cc injectors on stock k and duty cylcle is near 68% at 450whp.so i think it should be enough for 550whp i think
@@TeamIPhone360 15 psi . but i think with a nice intake and more eiffiecit turbo(i am using Ebay knock off) 450 can be made with 13 psi. my compression ratio is 10.4:1 . i know its a bit highr for turbo but i think its best overall if you wanna run under 18 psi