$3 DIY DIFFUSER with a CHOPPING BOARD! (seriously)

After upgrading my exhaust, I wanted a rear diffuser for the car to match the look. Trouble is, there aren't many available for the Passat CC, and it's hard to find one for any car for less than $300. I set out to build one for 1% of that price, and as you'll see in this video, it worked!

[@davidmizak4642]

Thank you so much for your time and labor on this video. It seems like an inexpensive way of doing but it looks great when secured properly and painted. Thanks for sharing your ingenuity and skill.

[@markgrovenor389]

Well done buddy, I love to see people use a bit of imagination and get the results they wanted! How is it holding up? Did the paint stay on long term?

[@OEMStez]

Honestly still looks just as fresh, I was expecting to have to repaint by now but it still looks perfect!

[@Reaper-cs7qt]

Excellent idea !!! Great video. Thanks for sharing, definitely my next project !!😁😁👍🏻

[@williamh6547]

Nice 👍, Gunna do something very similar to my charger, but with aluminum, no way I'm paying for that crap that's mass produced. Great job dude

[@OEMStez]

Aluminium will be nice, if you’re painting it let me know how it goes as painting aluminium can be fiddly

[@williamh6547]

@@OEMStez painting aluminum is tricky ONLY because people do not properly prep it, if you clean it with metal cleaner, then sand the surface, clean again, then prime with self etching aluminum primer, THEN you paint. I have yet to have any of my aluminum projects chip, or peal. PREPARATION is the key. 👍

[@diegochan3351]

Great idea Im definitely trying it

[@mopar2018]

Was looking up diffuser videos and ran into yours. Amazing job, I love the finished look.

[@hazardthad2370]

Nice video man, literally was looking for a jetta mod lol, can't wait to try

[@danielsonyShima5]

nice job bro!

[@kid1274]

Thanks for sharing 👍 brilliant idea which I gonna copy on my ride.

[@mazerguru3891]

You did great.

[@DJWizmuzk]

Nice vid, excellent idea

[@eldrickejleest]

Great idea and nice work!

[@andersonjames3748]

Thanks bro

[@xlot504]

That was legit man!

[@ToximGV]

This is actually bonkers, such a good idea, i have just finished doing this on my Audi A3 8P, looks pretty decent concidering it cost me like £5 and if i decide i dont like it in the future i can just buy a diffuser for £80. Cheap mods like this make me happy. I sanded my fins to 800 grit and i they where completely smooth, everything was pretty easy to do, the only thing that was kinda hard was getting rid of the texture, that was a pain... other than that im well chuffed :)

[@danblades5893]

Is yours facelift 8p. Mins has the grey diffuser factory and it’s so hard to get the cardboard shapes

[@ToximGV]

No mines the pre face lift so its smooth at the back, i actually wanted the facelift back but they arent interchangeable, it would however look really cool with these fins on, you should persevere and get them to fit, use cardboard and just keep making tempaltes till they fit nicely

[@VWG512]

Can i know the material of chopping board because i cant find it

[@OEMStez]

Plastic type is HDPE, a lot of chopping boards are made from it

[@locoautos7862]

Awesome job .. new sub

[@Tareqprince]

Nice jop

[@ronniematthews3408]

You could have bought black cutting boards

[@OEMStez]

Where's the fun in that? 😜 also makes it a little harder to demonstrate shaping on camera

[@a.joegevara3519]

I've used nylon twine to cut PVC pipe, I'd imagine it would cut that as well.

[@marwanehags1242]

Hello my friend, how are you? Good work my friend, please, I want the exact sizes

[@bondoman2k]

Definitely a great DIY. Looks good too! I have a 2009 Mini Clubman this would look great on, EXCEPT, My rear bumper is 'squared' off at the bottom so in order to do this I would either have to cut and rebuild the lower center of my bumper cover, or find one from another model of Mini (which ain't cheap so that's out of the question..lol). I already have lower side skirts (complete with 'wings') I made myself using styrene house baseboards from Home Depot, and built a front splitter from an old abs sheet I got from someone for nothing. ;)

[@OEMStez]

Mate that's the way to do it 👌

[@viniciusbueno852]

Very Nice! If u use a Rubber U Channel on the exhaust cut looks way better, and you can spray paint all in black! Here in brazil every body do this cuts and use rubber as finishing!

[@iamKilano]

This was really nicely done! Love the design you came up with too.

[@Gangster9988]

so fu*cking creative!!

[@cainnolan4404]

what downforce will this add to my 90s honda civic

[@OEMStez]

should add at least 40hp of downforce bro

[@barabasiistvan1709]

@@OEMStez lol!

[@barabasiistvan1709]

It's a difuser of the wind from underneath the car! Helps in turned

[@carlmollnowii340]

It will add no downforce. Purely cosmetic. This is added to the rear valence, which is not a diffuser.

[@Raymo2u]

In the future you should use RIT Dye instead of painting them, that way even if they get nicked up it will always be black

[@OEMStez]

That’s interesting I’ll look into that

[@TheBigBentley911]

I'll be damned. That looks better than I thought it would. Good job.

[@zeppie2002]

Well done, bro! This was always in my mind when I had a modified VW Vento GT (Jetta III in the US), but never actually DID it Now that I have a Passat CC 1.8 TSI myself, I'm interested in this vid. :-) Did the black under-bumper part came off easily ? I did noticed there are a lot of plastic clips... Thanx in forward!

[@OEMStez]

Nice car - the clips do come off with some persuasion, they’re not that difficult to unhook but there’s just a lot of them. Hardest part is re-aligning them all when refitting. You can just do the mod on the car but much easier once it’s off. From memory there are a couple Torx screws as well, don’t rip it off until they’re out 😅 good luck mate

[@william2828]

Well done bro, I am gonna try do this actually now

[@udownwito.p.p4153]

Looks sick bruv! Good job and vid, subd 💪🏿

[@panaroux]

Such a sick tutorial man, thanks!

[@murzynek6944]

I will be going for this you are genius and it looks clean as hell on the video. But its a shame that you skipped one important part at the beggining. Do you have any tips how to cut the cardboard so it fits car nicely? Or you were trying over and over again untill you got satisfying fitment?

[@OEMStez]

Pretty much just trial and error yes, cut the contour gradually and hold it up against the bumper to check fitment. Hold it with as little pressure as possible to make sure the cardboard isn’t flexing as this will reduce accuracy, and you can shine a torch from the other side and look for gaps where light is shining through to get it perfect. Hope that helps 👍

[@chaideb-mament]

what is this material bro??😮

[@theinternet8853]

Excellent job man 👏 Did you just use regular screws? Has it been ok on the car after all this time?

[@OEMStez]

Just some basic sheet metal screws from memory, I'm going to do a 1 year update video in the next couple weeks

[@dirtylaundry00.]

hello there

[@nichollastee9616]

great idea

[@kjohnston6650]

Bro, tell me, how did you go about getting the template ?

[@OEMStez]

Just started with some cardboard pieces that I thought looked decent, tweaked size and shape until I liked how they looked, and then fine tuned the edge that sits against the car to make sure they were flush. You'll want 2 templates, one for the inner pair and one for the outer pair, as they sit slightly differently on the car. Very easy, just use some thick cardboard and play around a bit

[@purplemonstertv]

Have to say that’s a great idea and looks good. Love the way all Done by hand. Great video

[@TurunHenkka]

I was looking for this, thanks

[@caveyfpv6232]

Looks clean 👌👌

[@Unknowntodayandtomorrow]

Wow I rate you!!!! 👍

[@monteclark5191]

Kudos man! Looks awesome, thanks for the idea! I soon will be applying your idea to my 14 cc R, subbed!

[@OEMStez]

CC gang 💪 thanks legend!

[@taiblatiftaiblatif724]

Nice job..

[@franchisefred4066]

Siiick

[@just_passing_through]

I think it’s time to call out the elephant in the room. You did not add a rear diffuser to your car. Your car came with a rear diffuser. What do you did was take off the rear diffuser that was supplied with the vehicle, screw some fins to that diffuser, and put that same diffuser back on… now with fins. Which ultimately serve no purpose. Fins add no downforce above a diffuser without fins, and are completely pointless.

[@OEMStez]

Correct, it’s a visual mod🗿a functional diffuser is not required on a daily driven Passat that averages 27kph

[@jvinsnes]

lol this comment

[@drivenltd2020]

How did you get your template

[@OEMStez]

Just trial and error with cardboard

[@Martin_Steven]

Man!! As someone who isn't in love with the available diffusers for my car ...this video is on point!!! Thanks for the inspiration ...