Intercooler System 04-05 Chevy/GMC 6.6 LLY W/Boost Tubes Banks PowerOptimizes the boosted air density for higher continuous power and lower exhaust gas temps. Restriction free for superior flow with 25 percent larger core area and 34 percent more volume. Big boost tubes and durable cast end tanks pack cool, dense air into cylinders. Cooler EGTs, more MPG and constant duty power. It doesn't get any cooler than Techni Cooler Move over, pipsqueak. The stock intercooler has an inferiority complex. No wonder it's smaller