I'm with Cosmo, if you get a bigger intercooler on a stock turbo, even though it CAN hold a larger air volumn than the stock one, it won't gain any power. You need a larger turbo to fill that intercooler with enough air to push through to the engine. For example, if the turbo pumps 300cfm, then a larger intercooler isn't going to change that. You just took away a small intercooler cooling 300 cfm of air, and replaced it with a larger intercooler cooling 300cfm of air. 1000cfm is what the intercooler is capable of cooling up to.