I think it pretty obvious (but that's just me) that the comparisons are relative to the gains of competing products of equal area, not absolute gains for the vehicle. I.E. if the competitions' product creates 10 lbs of downforce, these produce 30.3 lbs of downforce. If the competitions' product extracts x cfm from under the hood, these extract 2.54x cfm. You can't seriously think they're claiming that these triple the overall downforce of the hood
First, you're wrong and you really need to google "Coanda Effect". Hood angle has little or nothing to do with the louvers' angle of attack in the airstream. Second, I just ran out and measured my hood angle, came up with about 10 degrees. Also measured the hood angle on my Transit van which, I would say is FAR more aggressively sloped than any normal passenger car, and got 20 degrees. I think you'll have a really hard time finding a hood that doesn't fit within their 0 to 15 degree recommendation and even then I doubt the performance would deviate substantially enough to matter.
This is race car stuff. Race cars don't sit out in bad weather. If someone wants to install these in their daily driver that spends its entire life exposed to the elements then that's the owner's problem to figure out and deal with. Magnetic covers seem like a possible solution. Maybe
@aaron240 could design good looking magnetic "parking" covers to fit over these as optional equipment. But of course every **** sucker in this forum would probably find a reason to rip him apart over those too.
Nitrous is a universal part. Nitrous Express, NOS et al definitely haven't tested their systems in nearly as many vehicles that their products are applied to. By your logic, nitrous is snake oil until it's been fitted to every car in the world and put on a dyno. Chemistry and physics be damned! lol Just because you don't grasp the basic fundamentals of aerodynamics doesn't mean that race louvers is lying or misleading you.