[Critter]

I will agree that the advertised dyno numbers for aftermarket packages aren't usually realistic to the average hot rodder. First off they are talking about crank hp numbers. they set up an engine with everything perfectly machined and balanced. After they put on the parts being sold they sit at the engine dyno for hours on end tweaking and tuning and trying different options until they squeeze out every last drop of power. Usually by that time the motor is timed in a way that it is no longer a real world drivable engine. Not to mention that average guy in his garage or even working with a machine shop will never tweak the engine anywhere close to that to get everything setup even close to the perfect conditions that were used for dyno graphs. Unfortunately 9 times out of 10 when I dyno a vehicle that has never been on the chassis dyno the owner is disappointed in his numbers. Either because he had advertised crank HP numbers in his head or the vehicle just flat out isn't tuned right.