Banks Power 07-10 Chevy 6.6L LMM ECSB-CCLB Monster Exhaust System - SS Single Exhaust w/ Chrome TipThe CoolCuff design is tested and refined by Banks engineers using Computational Fluid Dynamics software, then validated through extensive temperature testing in all areas: before and after the DPF, 6 inch out from the tip, by the spare tire, shocks, wiring, hoses, and more. First we tested our own exhaust then we tested the others. Result: Monster Exhaust measured well over a hundred dEGRees cooler than the competition, and cooler than stock, too!