This install guide is for the Flat 6 Motorsport diverter valves, but can also be used as a guide for the front bumper removal on a 95b Porsche Macan.
I always like to start from the top and make my way down. It is useful to have a lift for this project but is not necessary.
Tools needed are:
Small Flat Head Screwdriver
A T25 Torx
A T27 Torx
Socket Wrench for Torx sockets
Pliers of some sort to remove the spring clamps
First Step is to open the hood of the vehicle and take a look at what all will need to be removed. Start by removing the 4 clips that are at each corner of the plastic shield (red arrows in the picture.) To remove these clips simply insert a flat head screwdriver into the the side of the clip and pry up the middle section.
Next Step is the remove the hood latch handle. To do this you need to remove a slide clip that is holding the handle in place then wiggle the handle back and forth as you pull up. Not much force needs to be applied but it might be a little tight.
Here is a picture of all the clips that need to be removed.
Now you need to remove the screws holding the top of the bumper. There are 2 T25 torx screws and 2 T27 torx screws. The T25 screws are the ones on the outside and the T27 screws are the 2 on the inside. The T27 screws are reverse thread and will not fully remove from the bumper. Notate how far the T27 screws are screwed in for reinstall.
On the side of the vehicle under the headlight there is a plastic panel. There are 2 clips holding this on. Remove the 2 clips the same way you did on the top panel. Once the clips are removed you can remove the plastic panel. The panel is snapped in on the underside so just pull up. Do the same on the other side.
Now you have access to 2 more T25 screws. Remove these. Do the same on the other side.
Start the vehicle and turn the wheel to the opposite side you are working on. This will gain you access to the 4 T25 screws that hold on the fender liner. Remove the 4 screws that hold in fender liner. Use your fingers or a small screwdriver to pry the fender liner out from the bumper. Do the same on the other side.
Once the fender liner is pulled back you will see a black bracket. There are 2 T25 screws that are tucked into 2 pockets. Remove the 2 screws. Do the same on the other side.
Move down to the underside of the vehicle and remove the T25 screws and 2 clips holding the under panel on. You do not have to remove the panel completely if you don't want to but it is easier. There are 7 bumper tabs that are held on by T25 screws, 5 are visible and 2 are under the side underpanel.
On the passenger side there are 2 connectors that are located in the fender well. Unplug both connectors, They can be really tight from all of the dust/rocks/dirt that gets stuck in the connector.
Everything is now removed to remove the bumper. Slide the bumper forwards and it will come off. This is much easier with a helping hand.
Now that the bumper is removed you have access to the diverter valves. They are located towards the bottom on the left and right hand side.
This is a pretty straight forward swap out. Remove the small hose on the front of the valve. You need to squeeze the clamp on each hose and slide it back. Using a pick or screwdriver to wedge between the hose and the valve makes the hose removal easier. Remove the valve and spring clamps. The Valves come with worm clamps to replace with spring clamps, I recommend using these for 2 reasons. 1 you are never supposed to reuse a spring clamp and 2 it is much easier to install using the worm clamps. Choose which spring you want, I went with yellow, and unscrew the top of the valve and replace spring. The valve unscrews from multiple points so make sure everything is screwed on tight even the nipples on the sides. Install the valves the same way you removed them.
Now just reverse the process of removing to bumper.
I noticed a little but of sound difference and also seems to hold boost a bit better when shifting.