Benefits of running THE flap?

[terra]

Assuming you've already got an H bridge how involved is the wiring to make the flap work? Can it be done in such a way to as to reverse the wiring "mods" cleanly?

It's not involved at all. And easily reversible minus the H-bridge (but there's no harm to leaving that installed).

[Cubieman]

Could anyone happen to point me to the best current DIY for the wiring for the MAP/IAT/FLAP. And actually just the box installation in general as well.

Mainly just looking for MAP/Flap wiring info. I have the turner IAT relocation so thats done, I also have the Kassel MAP sensor, so good there except they left no wiring instructions but I believe I have an understanding of that, just need to be sure. So more wiring info would be of great help to me.

I have been looking at some good posts here:

https://www.zpost.com/forums/showthread.php?t=1650441

Just wondered if anyone saved any CSL box DIYs from the old forums.

[0-60motorsports]

Could anyone happen to point me to the best current DIY for the wiring for the MAP/IAT/FLAP. And actually just the box installation in general as well.

Mainly just looking for Flap wiring info. I have the turner IAT relocation so that done, have the Kassel MAP sensor, so good there.
I have been looking at some good posts here:

https://www.zpost.com/forums/showthread.php?t=1650441

Just wondered if anyone saved any CSL box DIYs from the old forums.

This is mine

https://nam3forum.com/forums/forum/main-forum/e46-2001-2006/13962-diy-oem-csl-map-iat-flap-wiring

[jbfrancis3]

This is mine

https://nam3forum.com/forums/forum/m...at-flap-wiring

Its a great one. I used the embedded image with credit to given to mwstewart.

[repoman89]

terra had posted a tip at one point that there’s a rubber grommet going to the DME box on the driver side right next to the fender with an extra little capped off rubber tube. I used that for the flap actuator (or position sensor? Whichever is on the passenger side of the flap). The plastic tubing fits in it perfectly. I also used his tip to create an extra connector in there that can be unplugged to make DME and wiring removal easier, it’s come in handy more than once.

I snipped the MAF connector off, pulled the extra wires, and reused some for the other flap connector (driver side one). For the IAT I drilled a third hole in that little box on the strut tower and sealed it up with some gasket maker, running the plastic tubing under the airbox to the stock CSL location. My MAP wiring goes through that little box too. Ideally you’d pull it through the grommet on the wiring harness at the back of the engine that 04+ cars used for that crankcase breather valve but you’d definitely have to remove the whole harness for that. Not that it would be that hard to remove.

My way was clean and stock looking but non reversible. Doesn’t bother me, the intake is on there to stay.

[Bigfoot]

If you are concerned about make non reversible modifications to your factory MAF loom, it can easily be disconnected from the DME.

Just label up the DME pin numbers on the loom and keep it with your old air-box.

[Cubieman]

Anyone else running the Turner IAT relocation harness along with the Kassel MAP sensor setup?
I sure wish Kassel would have given some basic instructions, there are 2 wires with little metal "tabbed" ends that terminate in the DME harness, somewhere. Than the third wire on the Kassel MAP setup is simply a T-tap.
Can anyone tell me if there are any issues using these 2 products together?
I obviously don't have a complete understanding of the wiring for a CSL box yet. I'd sure like to better understand before I get in there.
I have read through the posted DIYs and I very much appreciate the info. I am probably making all of this much more complex than need be.
Heres a picture of the Kassel wiring...



This is my current plan:
- IAT: plug in Turner Harness, done.
- MAP: (Kassel) wiring as follows

The MAP sensor is wired to the DME via 3 wires.

The wires are connected in the following manor:

MAP Sensor – Pin A to DME – Splice to X60003 Pin 17 (Brown/Orange) or insert a new pin into X60003 Pin 16 – Ground
MAP Sensor – Pin B to DME – Insert a new pin into X60003 Pin 18 (Yellow) – Signal
MAP Sensor – Pin C to DME – Splice to X60003 Pin 7 (Red/Green) – Shared Power (5V)

[heinzboehmer]

Anyone else running the Turner IAT relocation harness along with the Kassel MAP sensor setup?
I sure wish Kassel would have given some basic instructions, there are 2 wires with little metal "tabbed" ends that terminate in the DME harness, somewhere. Than the third wire on the Kassel MAP setup is simply a T-tap.
Can anyone tell me if there are any issues using these 2 products together?
I obviously don't have a complete understanding of the wiring for a CSL box yet. I'd sure like to better understand before I get in there.
I have read through the posted DIYs and I very much appreciate the info. I am probably making all of this much more complex than need be.
Heres a picture of the Kassel wiring...



This is my current plan:
- IAT: plug in Turner Harness, done.
- MAP: (Kassel) wiring as follows

The MAP sensor is wired to the DME via 3 wires.

The wires are connected in the following manor:

MAP Sensor – Pin A to DME – Splice to X60003 Pin 17 (Brown/Orange) or insert a new pin into X60003 Pin 16 – Ground
MAP Sensor – Pin B to DME – Insert a new pin into X60003 Pin 18 (Yellow) – Signal
MAP Sensor – Pin C to DME – Splice to X60003 Pin 7 (Red/Green) – Shared Power (5V)

Wiring the MAP sensor that way should work just fine.

Not really familiar with the Turner harness, but I'm assuming it just splits off the wires for the IAT sensor (can't think of what else it would be doing). I would be surprised if combining these two products didn't work.

[duracellttu]

You could run "9,10,15" in this scenario, which I believe is meant to draw air from below the car/outside engine bay when the flap is closed.
As said above - for main snorkel intake, could run an Eventuri scoop or piece of ducting to connect with the hole in the top of the brake duct.

I'm currently in discussions with a CSL owner in the UK to get pictures and an understanding on exactly how pipes 9, 10, and 15 are mounted from the factory. I'll be sure to share when I find out. It's been something I've been trying to find out for quite a while.

[0-60motorsports]

I'm currently in discussions with a CSL owner in the UK to get pictures and an understanding on exactly how pipes 9, 10, and 15 are mounted from the factory. I'll be sure to share when I find out. It's been something I've been trying to find out for quite a while.

Here you go:

[duracellttu]

Here you go:

Thanks! Those are really helpful. Is that from a genuine CSL? Just curious.

Any pics on the #3 top pipe mount in the pic below?

[duracellttu]

Here you go:

Any other pictures or details around this mounting bracket? I couldn't find anything on realoem.

[0-60motorsports]

Any other pictures or details around this mounting bracket? I couldn't find anything on realoem.

So there is nothing there on a normal
m3. You’ll have to either drill it and install it with a nut and bolt or put a stud there and use a nut to secure the hose or it’ll touch the belts. Don’t ask me how I know lol

[duracellttu]

So there is nothing there on a normal
m3. You’ll have to either drill it and install it with a nut and bolt or put a stud there and use a nut to secure the hose or it’ll touch the belts. Don’t ask me how I know lol

Same thing happened to me when I ask the shop to install it. Burned through the plastic pipe and now I have to source new ones. Kinda pissed. That is what prompted me to find the proper way to mount these.

I know there is nothing there on the normal M3, which is why I'm asking how its done on the CSL. What mount is shown there in your pic? If its OEM there has to be a part number.

[0-60motorsports]

Same thing happened to me when I ask the shop to install it. Burned through the plastic pipe and now I have to source new ones. Kinda pissed. That is what prompted me to find the proper way to mount these.

I know there is nothing there on the normal M3, which is why I'm asking how its done on the CSL. What mount is shown there in your pic? If its OEM there has to be a part number.

It is Not OEM, its a stud we installed and used a nut to secure the pipe. There is no OEM part number as far as i know for a stud for that location.