Mazda evolved i-ACTIV AWD real world examples. 

Glad you enjoyed it!

Glad you enjoyed it!

Except there are multiple tsbs over the years for transmission and rear carrier problems. Cx5 has had tsb'd drive train problems every year since it debuted.

@ion123456 Just did some looking you're definitely correct about CX-5, Thankfully the mazda 3 (2021 is what I looked into) seems to have people complain of whine noise from Diff which is more often than not a misdiagnosis and is a wheel bearing, thankfully.

I had very little knowledge about this :o does that mean the system will break when drifting too often in the snow with a mazda 3 AWD? Got any idea on how expensive the repairs could be?

Tire tread matching is very important as their is slip built into the system. Mismatch will just cause it to be worse.

It won't necessarily hurt the coupling but it is very hard on the differential itself to do that.

I have some engineering documents from Mazda that are counter to some of the things being said in some of the interviews. They're a little coy about the gear ratio difference, but it does equate to the rear being able to take a higher torque split than the front when needed and not just for backlash. The 60ma would indicate that it is not a lot of torque being transferred and is a "ready" state but i have seen. ~1Amp is the highest I've seen. Where it gets tricky is with the right tools, you can watch what the commanded rear axle torque is, and it doesn't always line up. For example, I've had 1amp equate to 360 lb ft of rear axle torque, and I've had it equate to 300. I was working on trying to build a scale of what voltage=torque distribution, but it's a bit all over and without actually seeing the maps I don't know for sure what weighted data it's using to calculate the amount.

@@21mazda3turbo3 Interesting, that suggests that they are using the same torque trickery as Toyota in GR Yaris and GR Corolla, although they deny it in interviews. They even have bigger ratio difference than Toyota (1.1% vs 0.7%). How many plates are there in ITCC, is it standard or extended like in GR? 1 amp is quite low value, these electromagnetic clutch-packs usually have about 3 amps, that's also what Coleman was saying about previous gen of i-ACTIV AWD.

@4x4.tests.on.rollers I hadn't reviewed my logs for some time and went back to look. I was mistaken, and I have seen closer to 3 amps during some heavy acceleration and corner exits. I believe the ITCC is the 7 plate vs. the GR 12 plate l. I have a couple of sources that will send me one once one becomes available, and I can open it up and physically check. I have noticed about Mazda over the years they like to really understate what some of the technology does for whatever reason. When you're really playing with the car in the twisties, you can feel the rear end push, and you can get power oversteer in wet conditions. They hate talking about torque vectoring, but you can watch the brake system nibble on the brake calipers going into a corner like a traditional brake based vectoring system above and beyond what G-Vectoring does.

@@21mazda3turbo3 I am following what Mazda is doing with i-ACTIV AWD for some years, I've been doing some test drives with previous generation of CX-5, stand-by current was much higher there (over 200 mA if I remember well) but the system was quite lazy in terms of torque split changes. In your video it is much more active, more similar to Nissan's All Mode 4x4-i (Renault, Dacia) or Mitsubishi's AWC, a little bit less active than Suzuki's All Grip Select. The difference I noticed is the overheat threshold, Mazda system shuts down the clutch-pack much earlier (however those brands do not use ITCC but EMCD from GKN Driveline). Thanks for very nice info, do more videos about it, maybe some driving with wider live data from the system 👍

If you have more than 2/32 wear between the tires I would not risk it and would replace the full set.

@@21mazda3turbo3 Or ask the tire shop to shave down the tread from the new tire to match the other 3.

No problem!!

I noticed my 22 awd 3 does whine a little from 90km to like 98km. Never beat it on it too! Some people posted videos where it's unbearably loud. Mine is only noticeable if there's no noise in the cabine. Hearing people like you saying that their new diff whine almost immediately or is louder than their old one makes me not want to change mine... good thing i still got like 4 years of warranty if it end up breaking.

The new FR large platform is rear bias but does use a ratio mismatch between the front and rear to effect quick torque transfer. It uses an electronic clutch inside the transfer case that pulls the torque forward.

There are two big differences. 1st, there is not a gear ratio difference between the transfer and the rear differential. 2nd, the programming is quite a bit different. The basic layout and component design are very similar.

Good day!Do you have a video for cx5 system explained? Thank you ​@@21mazda3turbo3

When I am launching to check acceleration times my best have been done with traction off, sport mode on, brake torquing to around 2500rpm and using the paddles to shift.

It is an open differential that uses the brakes to do an amount of torque vectoring left to right.