Dynos can ascertain hp gains from CAIs in two ways. First, the CAI may ACTUALLY be getting cool air (which not all of them really do). Second, the CAI may provide a less restrictive air path to the tb as it sucks in the air. So, yes, this can be. But if you take an AUT Rad plate and CAI, and couple it with some fabricated scoops from the bottom of you grill to the intake of the AUT, your intake won't have to "suck in air." Air will be rammed into it at high speed. And that's where you will REALLY feel it.

 

There was a big difference. One that you could definately feel.

 

What plastic piece are you guys talking about? I just screwed my ARC cooling plate right in. Didn't notice anything. Pics?

 

uhh, I have never heard of a dyno shop that does not put a huge industrial strength fan in front of the car while it's being dyno'd. That simulates the ram air effect to some extent.

 

[QUOTE=AlX Boi,Feb 27 2007, 09:17 PM] What plastic piece are you guys talking about?

 

Never saw an "industrial strength fan" blow air at the grill at 80 to 150 mph. Indeed, I never saw a dyno shop with any fan at all. But assuming one does use a fan, it would be like pissing on a forrest fire compared with simulating the air flow of an s2k at speed.

 

never saw a dyno shop with a fan? heh.. try google image search for "dyno"

And arguably you're getting more cool air into the engine bay during a dyno pull than you would in real world conditions, because they always dyno with the hood up as well! Hell sometimes they even pull the front bumper off...

 

Okay, I see what plastic piece you guys are talking about. The Arc cooling plate doesn't have the bump that leads to the intake. Everyone says take off the plastic piece with the AUT plate, but what about the Arc?

 

The effect isn't from cool air entering the engine bay, it is from cool air being forced into the engine bay at speed. Most large fans used on a dyno are only capable of recreating 30-40mph winds. There are only a few dyno facilities in that actually use a special fan capable of creating 60mph winds. (numbers are recalled from memory and may be off, I remember the regular "large" fans be good enough to keep the engine cool, but not running optimal temps, while the "best" fans were around low highway speeds)