I wasn't aware of the Viper being available with them, but you're right it's a "Limited edition " and well above my stated limit of 300 hp. Many limited vehicles are available with things that standard production vehicles aren't.
X'ed, I never said you got nothing with a well engineered intake, I said 2% max. That could give you 1 - 3 tenths at the strip depending on the conditions. The problem is that companies often relate something like .5 - 1 full second by bolting on their part. That dyno pull you referred to was a good example. Three pulls, 2 showing modest 4 - 7 hp gains, the other (flashed) showing 11 or so which do they advertise, THE 11, and it isn't true. You should also consider that seldom if EVER do you see an article in a mag by a reputable tuner that only adds an air intake. Usually its in conjunction with other MORE involved hop ups. Generally chipping and bigger injectors. By themselves they accomplish little.
HDDP, where do I start. I don't hate anyone. I probably am CRANKY. Definitely old! You appear to have lots of money, that's cool, more power to you, I'm sure you earn every penny of it. I'm also sure you are a good driver, no one consistently goes to the track and comes home with a complete car unless they can handle it. That being said, you also appear to have very little actual knowledge about anything to do with otto 4 stoke engines. Partly because you still defend saskins when everyone now knows he is exactly what I described him as (A LIAR AND A CHEAT).
Also because you seem unable to grasp how HP is made. The fact is that whether an engine is carbureted or injected has little to do with getting air from outside the car to the carb/throttle body. Just for your own edification, COLD AIR BOXES make almost NO difference on a dyno pull. That's because on a dyno pull done correctly, the engine is just brought up to temperature with the hood OPEN OR OFF, the pull is done and the engine is then shut down and cooled off before the next pull. Unless you stack the box with dry ice or some other cooling method, you'll see little or no difference. A cold air box works by pulling moving or dead air (in the case of one being in a wheel well) while a car is MOVING at high speed. Sitting still as on a dyno produces no measurable difference. For your further info, a well tuned carb is a better fuel/air metering device then injectors. Ask any significant builder of racing engines and you'll find that's the truth. The reason you don't see them now on production cars as often as before is they are harder to maintain in a good state of tune. Bill