How to Control your Haldex AWD System 

Is there any solution for Gen 6 (S3 2022)?

Some people are heading for big bills to replace Haldex. The same people will no doubt also be complaining about VAG reliability. This is a solution looking for a problem.

I’d only lock it for launching the car from 0-100kmh For traction ya know? beyond that the ratio will stay 60-40 or even just off. ( 60-40 was the ratio in the GMC SCYCLONE)

@@tony_5156 did the scyclone use a Haldex? I don’t believe so but I like the way you think....same thing I would do,0-60 50/50 or so depending on power level.do you know if it would be possible to split torque enough for some sideways hooning? I assume the system won’t allow a 90/10 or even 100% rear.thanks btw the typhoon was another GM gem.

@@kolourblind3124 nope no more than 50/50

With the proper high performance tires like Nitto NT01's your car is going to have plenty of grip and will hook up just fine from a dig or from a roll. Plus if you don't have a fully built motor, built transmission, and a bigger turbo then this really isn't going to make much of a difference if you aren't putting down 500+ wheel horsepower. Tires will make a world of difference and won't deplete the life of your all wheel drive/4 motion system. This haldex controller is a hard pass for me and a waste of money.

Great info, thank you!

2 year update. My A3 now has a K04, full suspension upgrades, chassis bracing, front and rear LSDs and United Motorsport Haldex tune. Using all that with this controller allows me to have good performance at track days. I only run a few laps at at time and I watch the Haldex fluid temps in the app on my phone. I have a lot of fun with a full time AWD car on the track. I rarely use this in my off track driving as to keep the wear and tear down and I know I probably do enough wear and tear on track days. I know a guy who had a MY 2019 RS3 and he ran this controller full time, all the time and he said he never had issues for a year. I am not sure if I believe him but he is a good guy and a solid mechanic.

@@kylemandt527 man i was thinking about front&rear lsd for my S3 8L Gen 1 haldex. Can you please explain to me how do they help? Im a hillclimb driver and im building S3 now. I need as much REAR as possible! Thanks a lot !

Pre coronavirus that would cost 199.99$, I don't see what the fuss of 850$ extra is all about. See it in this way, there's boxes that "trick" your ecu to send more fuel to your injectors. This seems to do the same thing to the haldex pump. Kinda greedy imo.

@@ViceVersace haldex has always cost around 1k idk what you are talking about 199 for a haldex

@@LeGrimsta he’s talking about the module not the whole haldex system

Great for a rally car, but because the clutches also act as a "center differential", you will bind up your drive-train on a dry road. Just like a 4x4 truck.

Yep, that's impossible. You would need a center diff between the front and rear axle. A torsen diff for example, which would make it a REAL quattro. I dont agree that audi puts the quattro badge on a haldex car, it's just marketing for people who dont know what they're driving

@@wesley8096 Its not really "real" haldex either. The quattro ultra can in dynamic operation send 100% torque to the rear continuously and its always active, compared to haldex which is reactive. So if you use OBDeleven or VCDS you can clearly see the clutch closed almost constantly in dynamic.

Audiwan Kenobi me too!

Française Voiture Parts, FVP.

@@LGaragem 😂😂😂

@@LGaragem More like FAP

best comment ever :D :D:D

@@@ayon1.1 thanks mate, stay safe

But that wouldn't be as universally as this solution is at the moment. Not every car he mentioned with a Haldex needs the same grommet.

blocki So you make 7 different ones big deal

@@blockbertus He said the cables are vehicle specific... that being the case, it wouldnt be difficult to know what type is required?

@@ThatRoddy I must have missed that note. If that's the case, you are right. Sorry!

Idek what a grommet is Can someone explain please, thanks yall.

These aftermarket units might have their rightful applications, like: * The stock ECU was damaged and the OEM part costs more to replace than just buying this and using it in 'stock' mode * using them for a transplant (e.g. the 4motion parts) where you don't want to replace/recode ECUs refusing to work together (e.g. difference in ECU generations etc.). * Cars built for racing purposes could require a different 4WD strategy which would serve no useful purpose on a daily driver like engineers designed it to be driven.

100% unless you can afford non-warranty replacement costs for pre maturely worn Haldex.

The pump is ON all the time... sooo I ain't sure why this mod would shorten the life of the pump??

It will burn your haldex

still working? or did it overuse the system?

Same question as riot. Is it still working? had any issues with your haldex system? i’d primarily wanna use this for snow driving.

Haldex consumes about 23-30% of your total output. Running FWD at all times will benefit your gas mileage but will not be the same as the regular FWD cars due to all the extra weight. You're probably better off just unplugging the haldex cable if you really want FWD only (it's free).

@@GForceConnections yeah I wouldn't doubt that one bit. Still have a transfer case deal (I know it's not what it's called but does basically same shit) spinning and the driveshaft as well. Could also use that USP I think it is that makes that burnout switch with the little remote. You can switch it to fwd only but you get lights on the dash when it's activated. I'm guessing it electronically disconnects the haldex temporarily so it fails to work just have to stare at a bunch of error lights on the dash 🤣🤣 this box would atleast keep the dash from looking like a xmas tree

Same here. Came from a MK5 GLI getting sometimes 38mpg. Hoped I would get at least 31mpg with this Haldex but the best I've seen is roughly 28mpg at 45mph with the a/c off.

Keep in mind there is always some drag from the rear diff and other bearings related to rear drive that will always be dragging no matter if you are in fwd or awd

@@ReubenHorner or..if you want to disengage the rear diff also, you could search for rear free wheel hubs, if any are available for your car..

"Haldex Blue" you're referring to is basically a Haldex controller with a different map/tune on it. The colour is sort of irrelevant as it's just a cover. But the Haldex controllers you see like those (the selectable-mode and the competition ones) those are actually made by Haldex themselves, they're just sold by various tuner-type companies (HPA, Neuspeed, etc.). So there you're actually changing it to a controller designed by the company that made the coupling to begin with. Never really heard about "extra wear on the transmission" from using one, but anything is possible. This doesn't change anything about the transmission, just the way the centre coupling apportions power to the rear-end. These Van Der Veer boxes at DAP though, they are piggybacks it looks like, rather than replacement controllers. They are basically causing the stock Haldex unit w/stock controller to behave differently. It's a different way of getting to the same thing I guess. Cost is a little cheaper here (not a whole lot) but this seems more configurable, and configurable from a phone app at that. However thing that bothers me is none of the percentages make sense, so it's tough to know if this thing is really doing what you want it to? Like stuff like 50F/40R--where did the other 10% of engine power go? lol.

Yeah I agree - I dont think they'll make it any safer than it currently is.

More so on launch control the system will never have the pump running before the launch happens, so there will still be signal delay like stock.

I am pretty sure I have seen a system from Ecumaster for the Mk4 R32 that will lock the haldex under braking too

HPA Motorsport do Haldex box which makes Haldex engage while braking. They just don't have this for Haldex V yet. I hope it changes soon as it would be preferred solution for ultimate sports driving.

This is one of the reasons why people prefer torsen, because torsen is a mechanical AWD, unlike haldex, so it wont disengage when you brake, and has more predictible handling. Downside is that its always active, so you gonna have your fuel economy cut, while haldex disengages when not needed giving you FWD economy.

The Haldex Controller has a option to ignore the brake signal.

To my knowledge only on certain newer models

Exactly, that's very common mistake caused by lack of understanding what is the difference between wheelspin and torque.

www.shopdap.com/haldex-controller-mk7-mqb-gen5.html#additional

GForceConnections oh yessss thanks bro!!!!!!

in the app settings you can choose if you want the haldex disengage or not by braking or also by e-braking

Pump runs all the time when vehicle is on. However it is not always "engaged". Running at 100% will burn the pump out much quicker. Pumps usually last around 60-80 thousand kms depending on how lucky you are.

@@GForceConnections i guess i have original pump on my b6 and it has 330 thousand kms :D

Getting close, Gen3 S60R almost working.

60/40?🤷‍♂️

The best setup is a bmw 👌

@@GiovanniGamer345 LoL, until it rains or snows then you will need a second car just to go get toile paper. My R just ran neck and neck (with just a piggy back power module) with a new M2 comp, and the M4 on the highway...last time I checked those where another 45k$ more...sorry not in my budget. And the only BMW I’d ever drive would be an E46 M and good luck there. They are either 40k$ for 15 year old car or your buying a ragged out POS. Not to mention my lap times at Vegas Speedway are still just as fast as if not faster than heavily modded E46 M’s. That’s going to depend a lot if the driver is any good. You can keep your BMW Gio, I’ll see ya in my rear view...

@@hunterlane3323 you indeed have a great car I'm not saying that, changing the turbos in this golf makes it faster than m5s and rs6s its a Hella of a car, but you completely missed the point on you question the engagement I really think you would have lots more fun with a rwd vehicle

@@hunterlane3323 even going slower, and dude it's cars everything you do with them is fun

Is cupra only fwd?

@@jimventura99 Yeah, the Ibiza Cupra is the Seat flavor of the Polo GTi.

No, haldex only allows for up to 50% to the rear tires.

no this is a front bias system

Ahh darn, would be fun tho!

It’s possible we might find that out pretty soon ; )

@@Deutscheautoparts Ooooh that sounds very good! im excited!!!

I would just sell the golf R and buy an Audi with torsen awd or a Subaru. But is the haldex really that bad?

@@jaahasjaahas8729 from a performance perspective for going around turns, especially on loose surfaces like snow and gravel…it’s terrible bc it want the front wheels to slip 1st before transferring power to the back wheel which can cause the driver to understeer and slide straight off the tight turn unless you keep the gas pedal pegged which tends to help keep power going to the back wheels to get the car to rotate around… Sometimes having to completely lift off the gas and slam it right back down otherwise it tries to keep the power on the front wheels casing them to slip back into an understeer mode followed by power to the back wheel then just pushing the car in a straight line. (I also use studable snow tires in the winter… it also grounds out and tears the side skirt plastic under panels off in the winter when driving sideways through snow that is greater than 4 or 6” thick. But in the rain, it works very well with great torque vectoring. However, the driver always feel disconnected from the drivetrain so it’s scary to trust on turn at higher speeds until you get some quality drive time in it constantly pushes it’s limits in a safe environment free from hazards and people. The back isn’t meant to handle a 40% power all the time unless you want to damage it. Personally, I’m planning to rip out the drive train and turn the motor 90degrees and mate it to a six speed manual and axil to lsd in the rear end so it rwd bc I love the motor and it’s plenty of power for a fun little car… just needs some charisma and narrower tires for rwd fun flinging it sideways in the turns like an old 50-60’s race car on dirt making it a handling car that doesn’t just get wider tires thrown at it to handle better…plus narrower tires are cheap to replace and cut into snowy roads quite well… I also want to lift the whole car a couple inches so i’m not constantly breaking ice chunks that fall off the wheel wells of truckers on the freeway at 70mph with my oil pan which has also been upgraded from cheap plastic to a real metal pan. Definitely a few horror stories from other winter owners draining their car’s life blooded oil out after an ice chuck cracked their plastic oil pan. Last thing I want is to be stranded on the side of the road in a winter blizzard at night with a dead motor… meaning no heat… but i have my snowboard boots and winter equipment in my car for emergencies which can handle down to -10 degrees plus blankets and a short handled spade shovel to when you need to dig out a car that got high centeres

@@jaahasjaahas8729 but It’s a love hate relationship, I love predicting what my car computer is trying to do ad completely force it to do what I want well accepting that it’s really just a fwd car with some smart trickery which I’d rather just disable bc it makes the driver feel like a passenger instead of a driver.

If you wanted a quick drag car or freeway bombarder runner… It’s an awesome car for the price and easily upgradable with a rock solid motor but if you planned on putting $30,000 of work into it than just get a c7 z06 corvette which is just stupid fast for the price point

@@jaahasjaahas8729 i would but I need a winter car again which I don’t want to buy bc I’d get another corvette

J Irvine I can't wait for the answer to this question too

Getting close, Gen3 almost Gen2 is next.

Jeroen vd Veer Is volvo xc70 2006 gen 3 compatible? THANKS

Get a wavetrac I have a S3 as well

Audi S1 is supported as well Haldex Gen5 0AY

Yes