Im not impressed to put it simply. Installation sucked as far as im concerned. It comes with 2 studs and 2 bolts to mount it to the head. You are instructed to double nut each stud and torque the stud by turning only the top nut...then remove the nuts and do the other stud. Maybe it was just me but everytime I went to remove the nuts after tightening the stud would turn out. I ended up lifting the heater grid and using vise grips to tighent them down where there were no threads to mess up. The wiring mounted to the rear of the stock intake is removed and there is nowhere on the s&b to mount them...they supplied a zip tie. The dipstick doesnt mount in the same place so you have to remove the lower mounting bracket for the dipstick...shove the dipstick towards the rear and bolt it to then intake leaving the lower brace doing absolutley nothing. Seems like it could have had a tab in the proper spot on top to mount it correctly. The 5 pretapped holes....pffff....take your time putting the plugs in....cheesy threads and one of the ports was tapped slightly crooked...the plug isnt flush(and I didnt crossthread it...it went right in). As for performance and egt's...I cant feel or see a difference. Ive read threads where people say they have had great results but for me I feel I threw money away. Im by no means bashing s&b as a whole..I have their air filter kit and like it. Just my thoughts...take them for what you feel they are worth.