I have a friend who just installed a Zex Progressive Shot System, works it's way up to around 55 HP. It has controls that will not allow it to run too lean or too rich and guarantees it's HP numbers. Not only will it cool the air allowing the supercharger to compress more and cooler air, there will be the HP gains from the actual n2o itself. Oh and he still has his warranty. He said something of how chevy has a few sponsors (GMPPerformance i think he mentioned) and that certain dealerships dont mind if you use certain aftermarket stuff, as longs at it fits within their parameters(their sponsors im geussing). If he blows his engine, the chevy dealership in town wont fix it..he has to go to one out of town. I also got a vid of him racing a srt4(stock) and walking him hard in 4th. Soon as i get the software i will post it. oh and also a few vids of him at the tracK!

Hope that helps.