Category Archives: Exterior Modifications

Autocarbon Front Bumper Splitters for BMW E92 M3 from


Here is an install we recently did on our Project M3, here at

The product we installed is the “AutoCarbon Front Splitters.” These are made from REAL carbon fiber, unlike many other websites sell.

Installation: BASIC - Simple Tools, No Special Knowledge Required

Mock Up:
photo 1




These front splitters can be installed using automotive double sided tape, but we also used screws to hold them in place. This step is entirely up to you.
photo 2

photo 3


All done!
photo 4


How do you think they look? We love the aggressive style they have added to the car while maintaining a more subtle OEM+ look. Comment below with your thoughts!
photo 5

Carbon Fiber Side Grilles + White LED Turn Signal Lights


To cover the ugly chrome of the original side grilles on our BMW M3, we are overlaying them with real carbon fiber.

In this instlalation we are also installing white turn signal markers found at

Note: if you are just installing the CF overlays, it is not necessary to remove the parts from the car.   We just removed them because we were installing the turn signal lights at the same time, and to make better pictures.

















Graphics + Decal Installation @ DecalWerks


As one of the final touches to the E92 M3 showcar, is to list the sponsors whose products appear on the vehicle.

We are working from the DecalWerks shop today, getting logos cut and applied to the car.



Here is the Mechunik logo being cut from silver metallic vinyl film



Once cut, and the excess material removed from around the letters, we are doing a dry-fit of the logos on the door.


Then removing the protective backing paper…. .


We press the decals onto the vehicle, and remove the front masking surface.   Looks good!



The same for the larger Bimmian logo across the bottom of the doors.

We like the silver on the white, as it is subtle but it is still noticeable.


Making decals for other areas of the car — like these black hood vents, now blue to match your BMW wheels.



And some custom hood stripes to break up the carbon fiber.  They are the same matte white as the car, and are custom made to follow the contour of the lines on the hood.




URL on the hood, in the same blue material as the hood vents


And the finishing touch, a “Personalized By” sticker.  Want one of these?  Email us! (They’re free for past customers!)


Anodized Tow Hook for BMW


Here is a simple modification from Mechunik that looks pretty cool.


Its an anodized towhook.  I thought it would accent the rest of the blue on the car.


It is available in many colors at and will fit any BMW model.





Pop off the tow hook cover in the bumper, and screw in the bolt.


Tighten the bolt into the vehicle.


Screw the hook onto the bolt.


Once tight, loosen the hook back off until it is facing downwards, then adjust the retaining nut attached to the bolt so that the hook is held in place in the right direction.


We’re done! Thats it.


AutoCarbon Carbon Fiber Shark Fin Antenna Overlay


As you would have seen in our previous blog entries, we wrapped the roof in carbon fiber in DecalWerks Carbo-Noc Carbon Fiber Film.  Blog Post   Product information

But we still had the shark fin antenna that wasnt covered — thankfully, the car was black before wrapping so the unwrapped look of the antenna was not revolting (ugh, imagine if the car was a different color!)

Even though it didn’t look horrible, it didn’t look good — and another excuse to use carbon fiber on the car is cool.  So when we found out that AutoCarbon had just perfected their carbon fiber shark fin antenna overlay, we had to get one for the car.  So here it is:  and here’s the install!

This carbon fiber shark find cover is made of an ultra thin piece of real carbon fiber.  It is made using a process called DRY CARBON FORMING.  This increases quality and tolerances in tight corners and makes for a minimal thickness of the part.  Once installed you would never know this was an overlay.    Get more information or order yours at


No :) It doesn’t install on the trunk lid…



To begin installation start applying some of the included 3M adhesive tape to the backside. Cover as much of it as possible.


Once done, peel off the backing paper (you can still see the transparent double sided tape a little in this picture)


Line it up, and stick it on :)


Looks great!

AutoCarbon Carbon Fiber Rear Diffuser for BMW M3


What better way to complete the look of the M3′s rear than with a carbon diffuser.    It gives an aggressive look to an otherwise tame back-end.

In the case of the E92 M3, it really accentuates the quad exhaust and goes great with the other carbon fiber accessories on the car.

These diffusers are available for many BMW models at



Flawless carbon fiber finish.


Great design.


Start by removing the two screws under the bumper holding the bumper to the vehicle.


(To show where we are working)


Fit the spoiler in place roughly.  The spoiler will not be in the exact final place yet, but reinsert the screws back into the bottom of the car.  Dont tighten these screws fully yet as we need some play to shift the location of the diffuser a bit in either direction.


This is how it looks under the car, with the diffuser bolted in place.


On each end, position the diffuser so that it is in the correct position.  Ensure that both of the screw holes in the diffuser have bumper trim behind them where they can be secured.    Even though the diffuser is rigid, it does have some flex in it, so if you need to twist / bend it a little to make it get into the exactly correct position on both sides, this is no problem.   When positioned correctly, use a drill to drill two tiny pilot holes in the bumper through the holes that are already in the diffuser.



Use 4 stainless screws to secure this to your bumper through the holes you just drilled.


Looks awesome!

What an aggressive stance… better pictures to follow

AutoCarbon Carbon Fiber Mirror Caps for BMW


The M3 has incredible looking mirrors, but the shape is pretty boring.  I tried leaving them black to contrast the white, it didnt look good.  We wrapped them in matte white like the rest of the car.  That didn’t look good either.

It had to be carbon fiber.

So, AutoCarbon to the rescue — they make awesome stuff by the way — carbon fiber mirror caps it is.

AutoCarbon makes these mirror caps for many BMW models, get the list or order yours at


Here they are.  Flawless weave.


They are made of ultra-thin dry carbon fiber for a very original appearance.  You can hardly tell its an overlay.

We are using the included double sided 3M adhesive tape to attach the cover to the vehicle.  We are covering the inside of the mirror cap with this adhesive tape.


Once the inside is covered well with tape, we remove the paper lining, and fit it onto the car.   (We used more than this amount, just for illustration purposes.


Even though the carbon is rigid, it can bend — we bent it a bit as we were installing it so that the adhesive didnt have a chance to touch mirror in the wrong place before we could get everything aligned.



Looks great! Looks even better in person though.  Better pics to follow!


Lines up with the original mirror cap and follows the lines of the mirror very nicely!




AutoCarbon Carbon Fiber Grilles for BMW


One of the most obvious items to change on your BMW is its grile.  The fact that its a shiny grille from the factory just doesn’t make sense.   See my rant in this post

As you could see in that last post that I just told you about, we were torn between putting in all-matte-black grilles and grilles painted in an accent color.  Now that we have added all this carbon fiber to the car, carbon fiber grilles are a tempting addition — so we went for it.

We showed you in this post how to remove the original grilles, so we dont need to see that again…. lets snap in the real carbon grilles from AutoCarbon — which by the way…. are available for just about any BMW model at









AutoCarbon Carbon Fiber Rear Roof Spoiler from Bimmian


A roof spoiler is one of those subtle modifications that makes your car just that bit different than everyone eles.  It adds a sporty character to the car.

Bimmian sells these available in pre-painted versions or in real carbon fiber through AutoCarbon at

We have decided to install a carbon fiber spoiler onto the car to go along with the hood / trunk, and other carbon goodies we will be installing in the coming days.


Freshly unboxed.   Our AutoCarbon CF trunk lid makes the perfect photo table :)



First we dry-fit the spoiler to the roof line to get an understanding of how it will fit, where the edges will go and to learn the centering points left-and-right.  Its much easier to do this with an assistant to ensure you place it exactly centered.  Once you have determined its permanent mounting location, apply to the back of the spoiler either a strong adhesive, or butyl tape (used for installing windshields in cars – available at most glass shops) for a very secure but non-permenant installation of the spoiler.


Precisely line up where the spoiler will go while holding it slightly above the glass.


Once satisfied with the positioning, starting from the center outwards, apply pressure to push it down.  Put a heavy bag of rice or potatoes (or multiples) on it to ensure pressure is put on the spoiler as you let the adhesive cure as specified.  Before driving, try to pull up on the spoiler and ensure it is firmly attached so it doesn’t come off while driving.


What a great look!!!!!

AutoCarbon Carbon Fiber Trunk Lid (Boot Lid) from


A couple days ago we mentioned how excited we were to introduce to you how AutoCarbon has introduced a new line of Carbon Fiber Hood and Trunk lids for BMW vehicles.

These parts were brilliant in their design, finish, fitment, quality, etc.  We have added them to our site and to our project car.  Check out for the hood (bonnet) and for the trunk (boot) lid=

The trunk lid we are installing features a CSL style lip on it.  This gives such a great look to BMWs.  It should be shaped like this from the factory on all the M3s

The unboxing…..





Lets start by using a trim removal tool to remove the roundel emblem from the original trunk lid.  This one has adhesive under it unlike the roundel on the front of the car, so the removal takes a little extra time.

Shown are carbon fiber BMW roundel overlays found at


We then removed the license plate.


… and removed the grommets that were helping to hold the roundel emblem onto the car.


… and the license plate lights (these by the way crazy bright weisslicht LED housings.. check them out at or search the blog for when we installed these)… remove these by slipping a flat screwdriver or a trim removal tool under the left side of the light.


Then use screwdrivers to remove all 10 (or so) clips that hold the trunk liner onto the trunk lid.


Press in on the tab and pull out the wire for the emergency trunk release handle, then pull away the carpet liner.


Unscrew 3 bolts holding the closure mechanism to the trunk lid.


Remove the screws holding the locking mechanism to the trunk lid.  This was tricky, to finally remove but keep working on it, youll get it.


Use a ratchet to remove the nuts holding the reverse lights onto the trunk lid.   One nut on each light (which holds a bracket to secure the light),  and the light tilts outwards and slides out.


Unclip and remove the trim around the locking cylinder.

Not shown: remove the trunk release button (visible from outside near license plate lights).


Pull towards yourself to release the clips on this plastic trim on the inside of the trunk.


Remove the wires which are threaded through this trim piece.


All over the trunk will be wires.  Taped to the wires are little clips which fasten themselves into holes on the back of the trunk lid. Pull outwards (reach behind the sheet metal to squeeze the backside of the clips where possible) to remove.

Once all are removed, pull out the grommet which protects the wires as they run from the car into the right side of the trunk lid.  Then pull the wires all the way out so they are all now dangling and no longer attached to the trunk (dont worry, they arent as bad as you think to put back in).


Unbolt the 4 bolts holding the trunk to the car.  If you loosen but do not remove the top two, you can use those to hold the trunk for you as you remove the rest, then just simply lift the trunk off.  No help needed.


Put the two top bolts into the new trunk partway by hand, then lower the new trunk onto the hinges.   To get good alignment for the trunk try to position the bolts in the same place on the hinge as they were when the car left the factory.  You can tell where this is because the hing will be bare metal where it didnt get painted because of the presence of the bolt.

At this point close and open the trunk several times fiddling with the positioning of the bolts as necessary until the trunk has equal gaps on both sides of the trunk.


put the wiring harness into the hole on the bottom side of the trunk.  Straighten out the wires as best you can and push them up through the trunk as straight as possible.  You will then be able to see the wires through some of the holes in the back side of the trunk.  Once you see the wires reach in with your fingers or a pair of pliers to grab the wires and pull the rest of them through.    Run the wires along the back side of the trunk lid running each wire to approximately where it was when you removed it.


Where necessary poke out the wires for the lights and release button through to the outside of the trunk lid.


Reinstall the tailights in the opposite way of removal.  Remember clip the light to the outside of the trunk lid, then tilt it down to the trunk lid.


Use ratchet to secure the nut.


Plug in then clip the trunk release button into place.


Tilt the back end in first then clip the front edge in.


On the original trunk lid, drill out the plastic rivets which hold on the two closure adjustments on the edge of the lid.


Then use rivets or screws as you prefer to secure these adjustment posts to the new trunk lid.  We used rivets as we had a rivet gun handy.

Reinstall the closure mechanism to the trunk lid.  AT THIS POINT you must do trial opening/closings of the trunk to make sure it latches.  Ours initially didnt latch.  We had to remove and reinstall the closure mechanism pulling it towards the rear part of the vehicle.  In our case, it was sitting too far forward and JUST missing out by a fraction of an inch from being able to grab the closure bar to lock the trunk. Moving it literally 1/32″ made the difference between closing and not closing.  You may also need to adjust where the trunk connects to the hinges to slide the entire trunk outwards a little more if this doesnt help.


Reinstall the carpet + emergency grab-handle and the clips that connect the carpet to the trunk lid.


Reinstalled the roundel and the license plate frame.   Note that the curvature of the back of the trunk is a little different than OEM .. AND the adhesive on the back of the original roundel emblem is not reusable, so use some new double sided tape or butyl tape to attach the emblem to the new trunk lid.  you may need to build up the tape in certain areas of the emblem backside to make up for the change in curvature of the trunk.


Looks great! we will get some pro photography soon!