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      05-29-2019, 04:29 PM   #2
Jeff@TopGearSolutions
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Drives: C6 Z06, 09 335i, 10 335xi
Join Date: Dec 2008
Location: www.TopGearSolutions.com

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Quote:
Originally Posted by Vulcan50 View Post
So I understand that with a stock routed intake offer very little to no improvement. I however have a hot side inlet. So a friend of mine that has a 335d is letting me borrow his scoops and the air duct that is between the engine and core support (it ducts to the passenger side instead of the driver side).

I tried with a box fan to see what kind of flow improvement there is through the duct with and without the scoops feels like there's at least 2x the air moving through the duct. I'll report back later what temperature difference I see driving. Right now it's usually around 25 degrees over ambient. If this will bring it around 15 over I'd consider it a success.
Keep in mind, unless you are reading IAT in the air box, your IAT reading on the car is after the intercooler. Therefore your intercooler has the largest if not all the part in controlling IAT.

To see improvement on the stock airbox from an efficiency standpoint it's best to look at WGDC.
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