Is Direct injection LIMITING Power? Direct injection has many benefits for OEM applications, but it isn't as easily customised as port injection options on some platforms. Why is this the case, and what can we do about it? Let's find out with Michael Sitar of Toohighpsi Performance in realtion to GM LT1 and LT4 V8's ranging from 600hp to 1400hp. #highperformanceacademy #toohighpsi #lt1 #lt4 #gm #sema #buildtunedrive #dragracing #motorsport #learntotune #enginebuilding101 #auto #carmods #automoti