I honestly don't know. The Vararam was supposed to be good for 26 WHP, a number which I found hard to believe although the stock air intake was by far the worst design I had ever seen when I took it out and replaced it. Test conditions were perfect. So, I have 3 theories- Car is underrated from the factory, dyno was reading high (although nobody else seemed to think so when they got their heart breaking numbers), or I have a "factory freak." I was talking about the numbers with my friend who works in GM's small block group and he said that the numbers were a little high, but they do indeed get motors in their test lab that for whatever reason make 20 HP more than they should, even after they swap out manifolds heads, intakes, etc. I thought that was just a myth.