NightmareMoon
Well-Known Member
I think people forget the engine bay isn't at all sealed from the back at the exhaust and trans tunnel, and in normal GTs the undertray at the back is pretty vented or open to different degrees.Keep in mind that air that cannot get out means that air is not going to be coming in. Therefore, custom grills that are wide open, or cutting out a stock grill may only provide a small increase in airflow if at all. Allowing that air to exit the engine compartment and creating a bigger delta across the radiator and other coolers will make a difference.
You'd prefer the air go up as opposed to down and below, of course, and if you duct the back of the coolers, that's a different story.
Sure sure, more open is more better.
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