Supercharger Pulley Upgrade DIY | Audi S4 3.0T

Today we installed our Unitronic Stage 2 Single Pulley in our B8.5 Audi S4 3.0T. We show you a full DIY on installing this pulley and how much power you gain from this install. We also compared our 0-60 times from stage 1+ and boost pressures before and after.
Links Talked about in this video
Unitronic Pulley Upgrade Kit for Audi 3.0T (Supercharged)
www.shopdap.com/make-model-ye...
Supercharger Pulley Removal Tool
www.shopdap.com/uh005-bt0.html
Radiator Support Trim Cover Clip
www.shopdap.com/4d0-807-300.html
Fender Liner Clip
www.shopdap.com/4f0-825-429-a...
Belly Pan Screws
www.shopdap.com/8k0-805-121.html
Small Pick Set (4 piece)
www.shopdap.com/vw-audi-small...
VW | Audi Tuning Software from Home (Unitronic)
• VW | Audi Tuning Softw...
Supercharged Audi S4 Unitronic Stage 1+ ECU Tune... How Does it Do It?
• Supercharged Audi S4 U...
Audi S4 Front Brake Upgrade | 2 Piece Rotors
• Audi S4 Front Brake Up...
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This Video was shot at our VW and Audi Specialty Shop
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Cornelius NC 28031
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[@Deutscheautoparts]

- We appreciate your Support and Purchases! - Unitronic Pulley Upgrade Kit for Audi 3.0T (Supercharged) www.shopdap.com/make-model-year/audi/audi-3-0-t-supercharger-pulley-upgrade-unitronic.html Supercharger Pulley Removal Tool www.shopdap.com/uh005-bt0.html

[@danydelcid7930]

6:39 best part of the video😂🤙🏽

[@vincentkennedymcmahon8380]

Dany Delcid get a life

[@bt719]

Thanks so much for your content. I learn so much about my B8.5 S4 watching. Also, a nod to your editor and/or sound person…couldn’t hear the traffic at all at 19:33 ;)

[@bradley8300]

Good video, very helpful. I've got a revo stage 1 map on my s4 at the moment which I think has really livened up the engine. After seeing this I have booked it in to have the supercharger pulley changed. i can't wait to see what results I get.

[@maxapollo1]

You will love it I have a 3.0 A6 with the 1+ revo with superchager pully OMFG it flies

[@bobbobbert1705]

So? One year later... You went stage 2? How does it feel?

[@hendrikvandenberg]

@@bobbobbert1705 so two years later - and we're still waiting for a reply

[@Hopelessthugg]

​@@hendrikvandenberganother year

[@mikeortiz6584]

Great video👍🙌..Planning to do rear brakes replacement video?

[@emilioranon5792]

Love the video bro

[@motormouth813]

My 2015 S5 is stage 1 from IE. My stock 0-60 was 4.69 vs stage 1 0-60 4.1. That’s with minimum tread on my tires and no drivetrain inserts from 032 yet. Just with a set of fresh Michelin Pilot Sport 4s I’m sure I’ll break into the 3 sec range.

[@spidusp]

Love the wrap,looks like DTM cars

[@renetommy4659]

I know im asking randomly but does someone know a way to log back into an Instagram account?? I was dumb forgot the login password. I appreciate any tricks you can offer me!

[@beniciosterling5043]

@Rene Tommy Instablaster ;)

[@bobs71rt]

I’m new to the euro muscle..I have a 2012 S4 Stasis with all the updates and my harmonic balancer decided to come apart..I plan on putting my car in service mode to remove and install the new balancer...this is a great video by the way thank you for it..my question is do you need to disconnect the battery when doing the service mode..thanks again for your videos..there great 👍

[@architecturehappy]

After seeing your videos and a few others, will definitely be going unitronic stage 2 - single pulley. Would it be safe to have AWE touring exhaust equipped as well or would that melt the catalytic? Appreciate your help!

[@mikeortiz6584]

Great video👍..You still doing a Diff Service Video?

[@robertogarcia9413]

Hello Paul... Can you make a video on how to bleed the coolant im the s4 b8.5? Im planning on upgrading the heat exchanger in my car. Thank you very much...

[@danielpatterson1809]

do you press the pulley all the way up against the super charger? or do you leave like a 1mm space so that the pulley isnt rubbing?

[@Beacon57]

Dammit Paul, now I want to buy another B8....

[@luisnava3239]

Coming from a bmw platform I have to say the Audi is much more intimidating to work on. This looks like big hassle but I bet it’s rewarding. I have a b8.5 s4 and can’t wait to start modding it. Great videos; subscribed!

[@steedabjb]

It's not even that it's "intimidating" It's stupid. This amount of work to change a pulley...FML I wish I had stayed with M3s

[@ezveedub238]

You can skip all this front nose pulling just removing the supercharger. Way faster and less work. No Audi tech is pulling a front nose for a SC pulley.

[@malcolml1967]

That's a lot of work for a pulley but it probably well worth the upgrade 👍

[@Smokey_A]

Upgraded cooling next to keep the cats from melting down a bit longer?

[@jerryreyes3193]

Would it be possible to show a non sport diff b8.5 replace/upgrade to sport diff torque vectoring ?? I’d like to see one please Also how would you tell if you have sport suspension

[@silverslc29]

Need a heat exchanger video and test pipe install.

[@maxmustermann5013]

Great video! Really helpful but one question: what size are the bolts for sliding the front into service position? (9:46 min) ?

[@javiboo]

M10x1.5mm and 120mm long (that's what AWE uses). www.audizine.com/forum/showthread.php/696721-What-size-bolts-are-needed-to-put-car-in-service-position

[@teemo988]

Hi. Why my pulley belt making metallic clanking noise if I cold start the car after leaving it in the rain or cold for 2-3 days? It go away after couple minute, and you wont hear it again when you start up. Any suggestion would help. Thank you love your video

[@ronaldoravelo6107]

Damn that toaster adds mad boost

[@jerryx2000]

So is this all road legal in your home town? No issues with the police or vehicle control?

[@francisco_3726]

Awesome Video!!! Don't you have to upgrade your sparks plugs as well?

[@s.o3448]

How many minutes you must heat it and on what temperature? And i want to know if you pushed all the way in ? Thank you

[@MAS4X]

i see no heat exchanger upgrade .. Is it okay to go to stage 2 single pulley with stock heat exchanger ?

[@msherlock1607]

Great video guys, very informative, I use 99oct on my S5, as I have a convertible what sort of 0-60 times do you feel I would get? Perhaps increased by half a second 4ish?

[@Magowin]

I just flashed my 2012 Cabriolet to Stage 1+ from EPL and my 0-60 times stock were 5.1 with launch control and 5.6 just mashing the gas. After the Stage 1+ flash I"m getting 4.3 seconds with launch control and 4.5 seconds just mashing the gas. I'm going SC Pulley upgrade in a couple weeks when I get 034 mount inserts and rear sway installed so if I remember I'll update my times after. Stock testing was done at night in summer so temps were prob 60's to 70's and recent tests were current low to high 30's so that prob helped with times as well.

[@Magowin]

After mods mentioned above to Stage 2 single pulley I’m getting 4.1’s 0-60 with launch control & 4.3’s without. I’m thinking when it gets warmer & tires get better traction could be better also car is still learning the tune.

[@xliu37]

How about factory cooling for over compressed air?

[@83alpinab9]

I think it's easier to pull the supercharger and swap the pully on the bench. I worked at Audi and you can do it without pulling the nose and putting it into the service position.

[@rickylafleur5823]

Yea was confused when I saw that, my arms are much bigger then his and I can squeeze her out without touching the nose.

[@vin605]

Cool

[@CrazyYorkX]

Is p3 gauge able to read the oil temperature, oil pressure?

[@EddieQuiles]

Can someone please tell me what's the number of the smaller belt for the smaller pulley Deutsche sell the kit but don't know the number for it?

[@crescentandstarglory]

Why the need to change the pulley? How does it provide benefit?

[@marktrofimenko8438]

How long would you say this process takes?

[@chrisr5364]

mint

[@gtr485]

Kewl

[@zayaV6t]

do you have to get a tune for just a single pulley? i have a6 3.0t

[@jts400hp]

Isn't that brake rotor on the wrong side? That looks a a passenger side caliper just by the way the slots are facing??

[@jacobhauenstein]

I just did Unitronic Stage 3 dual pulley. Some people might not think it is justified to call it stage 3, but I can at least attest to that the "butt dyno" can't tell the difference between UNI stage 3 and APR's equivalent offering. Maybe my results are slightly off because I am using a pulley even smaller than the supplier UNI (just a slight bit more boost, peak boost is the same but the extra ratio allows the compressor to make more boost lower in the curve) but I really do think Unitronic is on to something. With their TCU stage 2 software, I was able to rev to 7300rpm, might not be alot for other engines, but with a hefty amount of boost from a high pulley ratio 7300rpm is vastly different from the 6800rpm stock limit. To most people's surprise, I do not run a heat exchanger, I just never drive the car to the point of heat soak, by monitoring IAT's through the OBD port. I really look forward to unitronic and other makers creating a (maybe lower priced?) or at least higher performance version of the fron Air-to-Water intercooler. The stock one is pathetic, designed tiny for the tiny amount of boost audi uses at stock - to maintain efficiency. The oversized, 140% larger APR offering seems to be great, but I am really hoping a company will improve on their makings. Not only is the FMIC mandatory for track days, but it really can help the car in normal driving situations, simply by providing a consistantly lower intake air temperature. Again, the lower the intake is the more stable the charge will be and the more timing you could feasibly throw at it, with water methanol for the ones that want to go ham. Anyway, that aside, great video and great car.

[@Alex-fo1rx]

Do you need tcu tune with stage 2 or dsg clutches will handle the power perfectly fine?

[@starcloud4959]

This sounds great.. approx how much would the cost be to do this?

[@timsamodarov]

stage 2+ would be around 3500 for erverything

[@toghi99]

Did you know you can have the supper charger out of the car faster and easier than putting the car in service mode ? 6or 8 bolts? One or two coolant hose And two connectors? If i am not mistaken, just saying

[@andycaffrey3820]

Would there be any issue running the pulley/tune with a 6spd manual? Thinking about clutch slipping with the extra power and torque from the stage 2. My B8 has about 45,000 miles and the clutch seems to be slipping occasionally during hard driving.

[@ABeans07]

Uh yeah then you don't want to do this

[@jonathanfaerber1]

Question all the mods you did on the b8.5 s4 are they the same on the b8 s4?

[@andreytarasevich4432]

Yes

[@StrongerThanEver84]

Damn 134,000 miles. Im over here about to buy an s4 and wont even consider one with 30,000 miles lol. I want mine to be a baby because Im planning on keeping it for a long time. Willing to spend 35k if I have to, fuck it.

[@OakLeafs30]

Could you see any other issues arising from this upgrade other than fuel budget and burnt rubber? 😜. But for real, like any transmission issues from producing more power than it might be designed for?

[@bobbobbert1705]

Not really. That car has been tuned like this to not piss off RS4 owners. There is plenty of room for added power by raising supercharger boost with a smaller pulley. Get worried at stage 3 (with crank pulley). You will need a new cooling kit for your supercharger.

[@bobbobbert1705]

Issue : Driving NORMALLY will be actually more fuel efficient, so more economic.

[@raiderbane1011]

Can I upgrade my q7 need more power

[@edwardwatsek6997]

Probably not worth trying this without putting it in service position?

[@Justsomeguy1015]

3.5 0-60 that’s insane

[@SkyJeffLine]

also not accurate. under 500 horse aint doing that

[@fewminutestudio959]

@@SkyJeffLine AWD with dual clutch and solid drivetrain mount? yes very obtainable. at the least under 4 seconds

[@Zonda.691]

So why unitronic? I’m debating on different tuning companies and I’m having trouble deciding which to choose. I love the numbers unitronic offers and the discounts for pairing tunes but so many people vouch for APR, IE, GIAC, 034 .. etc. I’m just uncertain why one would Be better or preferred. Anyone have some input?

[@fdation]

Zonda I'm gonna go with ie just so I can tune it from home and change things at my convenience.from what I've seen they're all pretty much the same.

[@Workaholic248]

Would you mind sharing with me a reference for your service position bolts? I’m unable to locate it in the description

[@bobbobbert1705]

They might come with a pulley removal kit as if the CTS Turbo's one.

[@bobbobbert1705]

Otherwise, just go to any hardware store and get two M10x1.5mm 120mm long (or longer).

[@Workaholic248]

@@bobbobbert1705 acquired! Thanks!

[@imfeelingjazzy1]

How many miles are on the s4 now? I'm debating on ~90k miles or spend the extra and get one with ~50k

[@jeremyplc2380]

you can see 134k on the speedometer when he does the 0-60 test

[@luisibarra1756]

I got a 2013 s4 and I did the pulley upgrade and put the new belt and a couple days later the belt got ripped in half. put another belt and the same thing happened, any information on how to fix this problem? Please let me know

[@cyclonus01]

Did you figure out the issue?

[@lornesbored]

obviously

[@nathanhoelscher9456]

Do you have to install the stage 1 and stage 2 chip tune or can you skip the stage 1 chip and go straight to stage 2 chip tune?

[@bobbobbert1705]

You can skip stage 1. Stage 1 is a programmation. Stage 2 is a programmation + supercharger pulley and belt. Stage 3 is a programmation + supercharger pulley AND crank pulley and belt. But with stage 3, you will need a new cooling system for you supercharger.

[@daveveerman2049]

@@bobbobbert1705 thanks for the info. To how much bhp does each bring you? Is it still wise on a car with 110 miles on the clock?

[@MrM5exy]

Where can i pick up those hanger studs? Or what are the dimensions?

[@bobbobbert1705]

They might come with the pulley removal kit as with CTS Turbo (even when not in the picture). M10x1.5mm 120mm long. But I have read that you could go longer like 140 or 150mm.

[@bobbobbert1705]

Any places that they sell bolts. Hardware stores... Order the kit first, if there is no service bolts then go buy two. They do not have to be threaded all the lenght. Any head, any grade, it is just to slide the front end.

[@adari9081]

Link to the digital gauge you have installed?

[@bobbobbert1705]

Cool yes, put will reduce air flow. You can also see you boost pressure and timings with an app and a small OBD2 module.

[@bobbobbert1705]

www.ecstuning.com/b-p3-gauges-parts/p3-boost-gauge-white-bars-red-digits-with-vent/lap3ab8x-plus-vf~p3c/

[@PASKI502]

Pulley woth tomato sauce 400g for 2 h yummy 😋

[@abc-eq9so]

And how will the S-Tronic cope with the "huge" amound of HP and TQ :)

[@jerevanski]

exactly my question haha

[@s.o3448]

@@jerevanski for this is extra Stronic upgrade ;)

[@jerevanski]

@@s.o3448 i know, recently had mine tuned to 455hp and 537nm. Had to tune the gearbox aswell 😅

[@s.o3448]

@@jerevanski is only 300-400€ for gearbox software

[@WillieWheels]

Downhill??

[@mannygsx]

Where’s the link for the cable?

[@Deutscheautoparts]

www.shopdap.com/catalog/product/view/id/602982 Take a look here

[@WillieWheels]

? Downhill?

[@obieoberstar]

In my opinion it would be easier to remove the SC to make the pulley installation and removal easier. Not that much work, just need some new gaskets for the intake manifolds and top off the coolant.

[@PeterPacia82]

What's the difference in gas consumption between stock and stage 2?

[@Zonda.691]

unitronic`s website just says better mpg

[@BetA666]

I got an consumption of about 16Litres/100km of 98 Octane on my stage 2 MTM tuned S4... stock was around 11,6

[@bobbobbert1705]

Should be more economic while riding normally and a lot more expensive riding in performance mode like with throttle above 75% open (varies form companies).

[@ReQuiem_2099]

What are the diameter and weight of these pulleys? Final ratio?

[@bobbobbert1705]

As of Integrated Engineering: performancebyie.com/collections/supercharger-upgrades/products/ie-supercharger-pulley-audi-30t

[@bobbobbert1705]

I noticed that different manufacturers has different SC pulley size. I have seen 57.7, 57.6 (ECS tuning) 57.5 (IE) and the 57.3 that I ordered on CTS Turbo (in canada). But do they just don't mesure the pulley at exactly the same place? All the same in the end? I just mesured mine with a cheap plastic caliper and on the top of the splines, I get around 57.3 to 57.4 millimeters.

[@ReQuiem_2099]

@@bobbobbert1705 Yeah, I've fallen down that particular pulley ratio rabbit hole. I've also noticed that the 4-bolt SC Pulley from IE is slightly larger at 58.8. Unclear on exactly what years/models seperate the application of press-on vs bolt-on. There's a pretty thorough deep dive into the pulley options on Audizine: www.audizine.com/forum/showthread.php/713242-**OFFICIAL**-Life-Beyond-Stage-II-the-higher-stage-development-thread With a well put together, but not complete pulley/ratio/belt spreadsheet here: docs.google.com/spreadsheets/d/1EvW8roNSYot_YYTeqKOHIREycLTlxWXLTyX8F25RI8c/edit?usp=drivesdk

[@ReQuiem_2099]

@@bobbobbert1705 I'm trying to run down any empirical evidence of possible power delivery difference between larger pulley combo vs smaller pulley combo, at the same final ratio. Ie: 63.25+207=3.27:1 58.8+192=3.27:1 56+183=3.27:1 I would imagine the added rotating mass could add parasitic loss and/or affect responsiveness, if only fractionally.

[@bobbobbert1705]

@@ReQuiem_2099 Looks like the 4-bolts is for newer models 2016+ (as of IE): performancebyie.com/products/ie-supercharger-pulley-audi-30t-4-bolt Why do they put bolts now? Since there is no keyway on the shaft, was it to prevent the pulley from turning on it's shaft? My 2012 is the pressed on type.

[@z32twinturbo13]

I’m new to the German car world. My 2013 S5 I will just pay people to do this for me. Lol

[@doebcp]

Why not just cut the pulley off with a cutoff wheel ? like on a v cut into the pullet....And install new pulley? I think I am going to fabricate a tool to get into the vee that I cut into the pulley to break the last remnants of thickness on the pulley...hopefully 15 minute job....bake the other new pullet and slide it on with the new belt

[@Robloxian102]

Please help me find a electric steering rack for 2013 Audi S4 B8.5 with dynamic. I’ve looked all over the country for a used one because I’m a broke college student lol

[@blockbertus]

I find it funny how broke collage students dive such recent and expensive to maintain cars and complain that they cannot get (cheap) parts for it...

[@Robloxian102]

blocki yeah but I have a good education and know how to spell

[@PabsEscobar]

Sometimes having fun comes first not everyone wants to be captain fucking sensible driving a Honda Civic until you’re 50, financially stable, and having a midlife crisis.

[@Someguy7488]

Sell drugs....

[@___asd159gh43]

Pro tip, an air fryer set to 400 for 20 mins works

[@Someguy7488]

S5 gets no love?

[@jamesa848]

I have 1. Worst Audi ever 🤦🏾‍♂️😂

[@alikafaen]

James A how is it a bad car?

[@germanv8s877]

@@jamesa848 What? You prolly own the whack 3.0 S5, drive a 4.2 S5 you will love it

[@IanRLewis]

So this is not a turbo? What is a 3.0t?

[@bobbobbert1705]

A supercharger. Since the general public is stupid, they wrote T as in 3.0T, for "turbo".

[@paull3179]

supercharging a toaster oven to heat quicker.

[@paull3179]

Just did my S4 to 450hp and runs perfect. Eurodyne.

[@kellinpatler]

Lookin’ awfully low on coolant!

[@jeremyplc2380]

does this car really has 134k miles or there are kilimeters?

[@bobs71rt]

Jerem Plstro I’m new to euro muscle..mine is a 12 S4 and my harmonic balancer decided to come apart and this is an awesome video..thank you for doing this..one question..when you put your car into service mode do you disconnect your battery..thanks again 👍

[@WillieWheels]

I think it was going downhill for this 0-60

[@december04-R]

Tool removal very pricey!! Barely gonna use it

[@RichardsWorld]

This tool is pretty cool indeed. But I'm pretty sure a standard pulley remover would work.

[@edgarhorton6769]

Why the hell did she pull the bumper cover your video showed nothing around there except for pulling the pulley off

[@Ivan-hx7cc]

3 and half seconds 0-60 on just a pulley and tune? Wtf that is supercar speed. I only got 280hp on my 2.0t tuned 😭😭😭

[@stephenEs3532]

yes sir Tuned b8.5 is a weapon

[@easyDoes1T85]

Lol. U thought u was doing something

[@chrisr5364]

would you think my q5 30 would be similar?

[@andrewalbrecht8104]

why tf is the puller 220 dollars

[@mtt907]

why didnt you just remove the supercharger? takes 10 min

[@bobbobbert1705]

Not to mess up with gaskets? Since the common way is this one.

[@justcallmevlad4218]

Yeahhhhhh I'd rather pay someone to do it. Fuck that

[@micromedia26]

WTF???? WHY???.... you disamble the whole front???...instead just remove the Supercharger itself?! unnessesary work! disambling whohle front: 1-2h! disambling supercharger only: 20-30min!

[@jesussavescars807]

Iam cutting a slit in the plastic of mine not taking crap off 😂😂😂 no one will ever see it and if they do who cares my cars not for sale