DSG GEAR RATIO ALTEA XL 2014 i-Tech DSG

[krestsaf69]

Hi

Im wondering if its possible to alter the DSG gear ratio by taking it to a garage via the ecu?

I find being a 1.6 7 gear DSG it struggles and vibrates a lot between 30-40mph or gear 6-7.

If im increasing speed from a 30 zone to a 40 steady and in gear 7 it vibrates. If i drop it to 6 its smoother but then when auto kicks it up to 7 again it vibrates again until i give more throttle up to about 45-50mph. But obviously this breaks speed zone limit.
Its like 6-7 ratio is high and 45-50mph setting yet if i use in 30-40 it struggles.

Could gear ratio be changed easily so its smoother?

I feel the 1.6 not powerful enough to pull the XL model like weight too much but only me driving and no load.

Sorry if vague

Thx

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[robint]

Put it into 'S' as it holds the gears longer

 

[krestsaf69]

Not great on fuel though in s mode plus defeats object of question why are ratios wrong

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[SeatJay]

You could probably get a remap and this would address it, but it seems a bit extreme to need to.

 

[PGS]

Yes I know what you mean. I have the same spec but not the XL version so its nothing to do with the extra weight of the XL version.

When in a 30 limit the car needs to stay in 5th but changes to 6th then the engine labours causing the vibration. Similarly when in a 40 limit it drops into 7th when it needs to be in 6th. I assume this is to optimise the fuel economy. The change up points only need to be altered by a 100 revs or so. I drop down a gear using the gear lever and leave it in manual so it does not automatically change back up again which it will do if you use the gear change paddles on the steering wheel.

It will be interesting if when we have the emissions cheat software update later this year if this alters this in anyway. If it makes it worse I will try an engine remap as I tow a 1200kgs caravan and a bit of extra power would not go amiss.

 

[MJ]

sounds like a power issue rather than a gearing fault. The only way of adjusting the gear ratio would be to physically remove the gears and replace them with that of a different ratio. Nothing electronic would alter the ratio.

 

[SeatJay]

sounds like a power issue rather than a gearing fault. The only way of adjusting the gear ratio would be to physically remove the gears and replace them with that of a different ratio. Nothing electronic would alter the ratio.

A remap would alter when the car is shifting so it could keep the car in lower gears for longer before changing up. That would stop the car juddering but it would also impact on the fuel consumption.

 

[MJ]

agreed but that's altering shift behaviour and not gear ratios.

 

[PGS]

It is possible to alter change up points of the DSG gearbox but only some of the more extreme tuners can offer this. It certainly not within the scope of your normal Seat dealer.

The other issue is that all i Tech spec Alteas are still under manufacturers warranty (intoduced Jan 14) and any mod of this sort would leave you high and dry if anything went wrong with the gearbox.

As I've said before I'm hoping the emissions cheat software update, which Seat have told me will happen in the 3rd quarter of this year, will help as they will have to alter the air/fuel mixture ratios and are fitting a 'flow transformer' ( a bit of mesh) before the the air mass sensor to ensure better accuracy.

Perhaps after this mod we might be able to get near the quoted mpg figures for the 1.6 TDI engine that everybody has complained about as its nowhere near the official figures.

As for the original ops post he could always hook a caravan on the back as it never drops into 5,6,7 gears to soon to cause a labouring engine vibration.

 

[Mike555]

Hi
My bet would be the car had a software update on the DSG gearbox.

I owned a Altea XL 1.6 TDI DSG for some 3 years from new and never had a problem with the engine/gearbox until Seat under a recall updated the software that runs the gearbox.

I was told the update was done because of some fires in DSG gear box's. As well as changing the oil.

From then on at around 30mph the engine/transmission would judder and complain. By dropping down a gear or by selecting sports mode the problem was avoided.

Seat must have got some complaints, see if they offered a fix!

 

[xlray]

Hi

For your information I have three vehicles with DSG. My 2.0L Altea is fine with the DSG and does not seem to change up too early. I also have a 7 speed in a bi-turbo Transporter Kombi. This is a wet clutch system as per the Altea, and whist it changes up early is still quite smooth.

The 7 speed dry clutch in my Audi A3 is a different beast altogether. This is the 150hp cylinder on demand engine. It changes up too early through most of the gears, for example you only need to move about 0.5 metre and its into second, which is really disconcerting if for example you are turning across traffic. The engine does not have the torque at the low revs, until the turbo kicks in.

I guess this changing up early is for emissions purposes, so its probably common across the diesels and petrols.

Its also much less controllable at low speeds for parking, which I guess is due to the dry clutches.

xlray