[Socket]

For CYL and other peps interested doing this duct transplant on the M3 rep bumper

The M3 rep bumper is supplied with M3 rep air ducts. These ducts have stepped sides and a tapering shape that ends in a narrow hole.

Pic 1 - M3 rep ducts fitted to M3 rep front bumper. Notice the ugly stepped sides
Pic 2 - M3 rep ducts, tapered to a narrow hole that leads to the wheel well

[Socket]

Genuine vs replica M3 ducts

Fortunately both ducts have the same size opening, so fitment on the rep bumper is 99%
The genuine ducts have some metal plates fitted that need to be removed and discarded
They are also longer so they will hit oil cooler, fender lining etc without major trimming
Here are some pics showing how to prepare the ducts including some side by side views

[Socket]

Remove Bumper

Next step is to remove the bumper. Plenty of DIYs on this out there, but here is a step by step if you are too lazy to look one up

[Socket]

Remove bumper part 2

[Socket]

Trim and attach new ducts

Put the bumper face down to get access to the back of the vents and test fit the ducts

Trim the ducts at a point so that when you look through the front, you can't see daylight
On the passenger side vent, its about 20-30mm from a ledge halfway down the duct
On the drivers side vent, its on a 45 degree angle about the same distance from the top edge. Its difficult to explain, just refer to the pics

Next step is to glue them in place
I was going to use double sided tape but it doe not stick well the the smooth plastic bumper
I finally opted for a generic plastic glue and taped in place while it was drying

Pics of passenger side vent install and finished result

[Socket]

pics of drivers side duct install and end result

[Socket]

Reattaching the bumper
Fit the bumper and make sure the new ducts are not hitting anything, otherwise remove and do more trimming
When done, reattach the parking sensors, head light washers and do up all the screws, reversing the removal process described above

If you followed these steps, the end result should look like this, including air flow directed to your oil cooler

Congrats

[BMOmega]

You probably need to tone down on whatever you're drinking/smoking! hahaha.

Lookin good!

[Socket]

Originally Posted by BMOmega

You probably need to tone down on whatever you're drinking/smoking! hahaha.

Lookin good!

Would look that way if you read the thread during construction

[BMOmega]

Originally Posted by Socket

Would look that way if you read the thread during construction

and i did.

[AUSf22]

Damnnn! Looks so much better now

[Pyro335]

Looking good Socket!

[kookie]

for a Detailed DIY.

[DR-JEKL]

Remember when I was asking what does it look like when you look up the duct so to speak, thats what I was after

Personally when I install an M3 bar with the ducts I think I'm going to try and put some mesh at the back of the duct, as if you had large rock say 1" in size at speed go up the duct it could smash your oil cooler causing damage.

Great work on the DIY

[JJH]

Not that I need this particular DIY but I have to say this is how a DIY should be done!!

[Socket]

Originally Posted by DR-JEKL

Remember when I was asking what does it look like when you look up the duct so to speak, thats what I was after

Personally when I install an M3 bar with the ducts I think I'm going to try and put some mesh at the back of the duct, as if you had large rock say 1" in size at speed go up the duct it could smash your oil cooler causing damage.

Great work on the DIY

Good point DrJ. BTW you cant see the oil cooler unless you get on the ground and look up into the duct (ie its hidden when looking front onto the car)
So the rock has to bounce in just the right way
If it happens Ill take it as a good excuse to upgrade to a sport oil cooler lel

[Socket]

Thanks guys

[CYL]

Thanks Socket!!!
What about the passenger side? Does the duct connect to anything? Or just any wind going through the duct will just hit the wheel lining? If so, I feel like cutting a hole to let the wind blowing to the brake.

[Socket]

Originally Posted by CYL

Thanks Socket!!!
What about the passenger side? Does the duct connect to anything? Or just any wind going through the duct will just hit the wheel lining? If so, I feel like cutting a hole to let the wind blowing to the brake.

Pretty sure it directs air into the engine bay, the wheel lining is in between the brakes and the ducts. Pretty sure you can hack a hole in the lining but it would look hmmmm well, hacked lol

[Boganian Rubes]

That one brake getting all the special treatment lol