Drove the truck after the install and all I can say is wow. The smaller pulley is boosting 9.5 to 10 lbs. The new tune from Roe accelerates much smoother, no flat spots and the TB is extremely responsive. I will be tunning it some more tomorrow. I heard a slight ping right at 4800 RPM. Will log a run from the VEC3 tomorrow and email it to Sean. I hope the pistons hold up until I replace them. Should I replace the rods too? My last mod will be ported heads.