I just did a AFE CAI, MSD 8.5mm plug wires, and Grantelli MAF sensor, and I kinda did it all at once, added the MAF last, and I noticed a little bit of increase, but more/cleaner throttle response. I only did the MAF because my truck is around the 220000km mark and hasnt had a MAF replace, and picked this one up cheap. But with all 3 mods, I have noticed an increase in MPG, throttle response, more pick up and go, with a bit more power. I also have the SuperChip FlashPaq BUT I am going to be getting the BB tune.