For all you with this i have a few questions. I want to get it after i/h/e but when i get it for 550$, will i need the harness too? Also how much will it be to be installed or can it be done by self? What do i tell the person i have tuning it, or will they already know how to tune it? How much all together did it cost you guys for the e mange and was it worth it. Sorry for all the questions, just looking for something to do after i/h/e and pulley. Help greatly appreciated thanks.