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(Pic) Why is there a plastic flap on our stock intake center duct?
Wanted to ask this question years ago...... Why is there a flap on the front of the air inlet here? Would it be better to leave it open at all times or is it actually functional for something?
Thx
George Lisciandro.
Last edited by George_1992; Mar 29, 2022 at 04:06 AM.
Reason: Question
Considering today in late March its 22 degrees F here in Boston the flap down helps the engine heat up faster to get you hot air in the cabin. In the summer I zip tied it open.
Considering today in late March its 22 degrees F here in Boston the flap down helps the engine heat up faster to get you hot air in the cabin. In the summer I zip tied it open.
Ah thanks mate makes sense..... I saw a E63 with the center duct flap removed as well so i'll do this too 👌
⏱️ 700HP Facelift converted C63 S Coupe with Drexler 3.06 plated LSD
Solved
Thanks to our German friends over at the motor-talk.de forums who have explained it. It serves an important purpose and prevents hot air from escaping the center duct and back into the intake snorkels on the sides.
You can test it yourself after running the car hard, the cooling fan activates and pull over, open the hood and whilst the fan is running, if you open the flap with your hand, you'll feel the hot air being blown out of the center duct.
When the flap is closed, no hot air escapes the engine bay and back into your intakes.
Wanted to ask this question years ago...... Why is there a flap on the front of the air inlet here? Would it be better to leave it open at all times or is it actually functional for something? Speed Test
Thx
George Lisciandro.
You can test it yourself after running the car hard, the cooling fan activates and pull over, open the hood and whilst the fan is running, if you open the flap with your hand, you'll feel the hot air being blown out of the center duct.
Last edited by jaceiondalen; Apr 12, 2022 at 08:11 AM.
You can test it yourself after running the car hard, the cooling fan activates and pull over, open the hood and whilst the fan is running, if you open the flap with your hand, you'll feel the hot air being blown out of the center duct.
err u just copied and pasted Jimmy's post....... not sure if you were supposed to post something else?
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