I've heard many people say the VRS needs the e-diff to handle the power, especially when tuning.

 

How many people have actually driven a 220 (non e-diff) with a stage 1? Curious, since I had mine remapped it doesn't have much problem putting the power down.

 

I've only read a handful of people tuning the 220. I've driven both, I don't see much in it.

Maybe the revo stage 1 doesn't apply full torque in 1st and 2nd - maybe they increase it gear dependant I don't know.

Mines an animal and unless completely dry and warm, I can't but the power down without serious throttle control?

 

But when you can it's LOTS of fun :-)

I though differentials are for vehicle turns primarily.

Hence, if you are in a straight line I can't see the advantage unless you start to hit corners or variation in road surfaces

You'd want 4wd really to really get power down rather than 2wd surely ?

 

https://en.wikipedia.org/wiki/Differential_(mechanical_device)

 

So if you are doing track days, chance are the differential would come into its own. But 4wd even moreso.

If you are driving on A roads and motorways a lot, or  e.g. quarter mile scenario I really don't think its going to see so much benefit having the electronic differential !

 

At the end of the day its just a differential and will not be powering the back wheels.

Edited 5 February, 20179 yr by vRSAnt
clarity

Go and drive a quick fwd car with a trick diff then you will see

There is a comparison between a Golf GTI and GTI PP linked below which shows the benefits of an LSD.

 

Golf GTI 220PS - Time 77.2 secs

Golf GTI 230PS + LSD + bigger brakes = 75.6 secs

 

The LSD equipped car is 1.6 or 2% secs faster around a track (best case usage), although some of this improvement undoubtedly arrives through the extra 10PS power and better brakes.

 

With a ~300bhp tune the LSD may show a larger benefits, but only within scenarios where a single wheel would otherwise slip. In cases where both wheels are slipping an LSD will show little benefit.

 

 

 

What a pointless comparison unless both cars have DSG or both have Manual.

This crowd seldom mention which tyres are fitted let alone adjust the tyres from how they receive the cars.

It would be good if they bothered saying, We are running 95 ron, or we are running with Super Unleaded 97 or 99.

21 hours ago, vRSAnt said:

I though differentials are for vehicle turns primarily.

They are, but without a limited slip diff the power is wasted sending it to the first wheel that loses traction whereas an LSD will lock the axle up so you can maximise the amount of power put down and make use of the grip.

 

I'm not convinced an e-diff will ever be as effective as a proper conventional LSD though.

As standard with OEM Fluid and Pads / discs the XDS / XDS+ disables its self once the brake system overheats, so you are as well going into the system and turning it off before starting a track session.

24 minutes ago, Offski said:

As standard with OEM Fluid and Pads / discs the XDS / XDS+ disables its self once the brake system overheats, so you are as well going into the system and turning it off before starting a track session.

 

Had my car round Ähvenisto and guess what happened? Yeps... exactly what you just described

 

actually, I had started to do some testing on XDS before winter started, setting it to various modes including disabled via OBDeleven.

 

I am still divided, but I kinda liked more driving the car fast with XDS disabled. As said here, XDS is artificial- it just applies brakes - and that unsettles the car a bit, making it less predictable.

17 hours ago, group1rs said:

Go and drive a quick fwd car with a trick diff then you will see

I have, did you not read the post?

 

To elaborate, I've driven a Revo Stage 1 manual 220 without an e-diff (mine, it's my daily driver) and a Revo Stage 1 manual 230 (a friends) with an e-diff. Both cars run on 97 Ron, both have Goodyear Eagle F1 tyres all round (with plenty of tread). There isn't as big a difference as the keyboard warriors will have you believe. I can't wait to try the latest VRS 245, with the mechanical diff, that will be a game changer.

 

My main point being, don't be afraid to tune the 220. There would be a small difference on the track, if that's what interests you. But it's fine for the road.

 

http://www.autocar.co.uk/car-review/skoda/octavia-vrs/first-drives/2016-skoda-octavia-vrs-revo-technik

 

 

Aren't we talking about the benefit of VAQ here rather than XDS? 

 

Back on topic, I'm not surprised the VAQ diff doesn't make much of a difference on the road. As mentioned it's main benefit is sending up to 100% of power to the wheel that isn't losing traction. Even with the map, in a straight line, chances are if one front wheel is slipping, then the other is slipping also and power needs to be sent to the back (a la Haldex). In the twisties you probably could attack it and put the power down better with VAQ, but again on a public road is it really going to be *that* much different?

 

Pistonheads also found the VAQ diff in the 230 to be quite weak in its action, compared to other MQB cars using it, so it's effect might be less pronounced on a 230 compared with a PP GTI or Leon Cupra. 

 

Why would the VRS 245 be a "game changer" it's just VAQ as per the 230 limited run?

Edited 6 February, 20179 yr by ahenners

Fine for UK roads because those corners are going to be taken at a sort of 60mph or not much more because regardless of the diff it is likely to be able to stop that will matter if something happens to be on the road.

 

Not a keyboard warrior, just an old boy racer (lived through the crashes) that drives in the real world.

BTW, and I forgot to say: I quite agree with the OP: The diff won't make that much difference on the tuned car and on the road.

Only felt on the exit of corners when putting down the power and... Even the stock power will be affected the same.

I thought I'd read that the latest VRS had a proper mechanical diff, my bad! It won't be a game changer then