Originally Posted by jcosta79

I tend to agree. Stock these cars put down between 255-275 RWHP, right? Gaining ~100 RWHP without changing cams or increasing displacement? I'm having a hard time buying it.

You can make N/A gains of 100 RWHP+ in an LS3 Corvette, but you need CAI, headers with exhaust, very aggressive cam, U/D pulley, and possibly some head work. And that's in a car with 6.2L of displacement to work with. Making those same types of gains with only 3.7L and LESS upgrades seems way to good to be true.