lack of motor break on DSG

[olly986]

Hi Guys,

I find that motor break is very weak when I drop gears on DSG manually, is remapping giving stronger motor breaking?

And what remapping is the best if it improves it?

 

[Redemption]

Engine braking on mine seemed better in S mode. Hardly ever used manual mode.

 

[olly986]

yep a little better in S mode but not amazing, I used to get way more from the Boxster with tiptronic.

I guess the extra bhp from the Porsche made the difference.

So back to my original question.

If I remap the FR to something around the 240ish bhp, will I get better motor break?

 

[Hugo Nebula]

I find that motor break is very weak when I drop gears on DSG manually, is remapping giving stronger motor breaking?

Current advice is not to use engine braking. A modern car with good brakes shouldn't need it (even though in a manual we all do it), and AFAIK the DSG is effectively in neutral during braking. Having said that, going down a steep hill, it will hold onto (rather than drop into) a lower gear.

 

[olly986]

Current advice is not to use engine braking. A modern car with good brakes shouldn't need it (even though in a manual we all do it), and AFAIK the DSG is effectively in neutral during braking. Having said that, going down a steep hill, it will hold onto (rather than drop into) a lower gear.

That should please garages for brake pads replacement, I am getting use to it now, it is the free wheeling period that feels strange at first.
Thanks

 

[Benjic2]

DSG engine braking ( it isnt actually engine braking only its the added resistance through the gear box) is actually high compared to a manual and most other automatics. It is also never in neutral unless you physically move the stick to that postion. Enjoy your new car, now that you have a proper one and not a poxyster.

 

[Damo H]

Engine braking is due to the engine not the gearbox, altough the gearbox can be a factor. Its certainly got nothing to do with how much power the engine produces. More Power does equal more engine braking, in fact in a lot of cases it can mean less as the engine manufacturer tries to reduce weight.

For example my Mrs old 1.6 16v Cooper had only 115bhp and yet provided more engine braking than her Dads 170bhp 2.0 VVTi Toyota Celica. The go to my Cooper S, bolt on a Supercharger to that same 1.6 16v and pump the power up to 240+ and engine braking is a lot more than the cooper. This being more down to the Supercharger.

The reason the DSG doesn't provide much braking compared with a manual is that it blips the throttle when you drop it a gear so the revs match the gear speed. Where as when you downshift in your manual you general slip the clutch and don't blip the throttle.

 

[Benjic2]

Your wrong damo. I never said the gearbox is the cause for engine braking, i said it adds to to perception of engine breakingeespecially in the DSG. As opposed to other automatics, the DSG has a hard connection between the engine and transmission through an automatic clutch. Therefore instead of just freewheeling when you let off the gas, the transmission is still connected to the engine. In most automatics, the lockup torque converter is unlocked and the wheels are no longer solidly connected to the engine when coasting. The DSG clutch only disengages when you about stop (except for shifting).*
Engine braking is mostly down to the compression ratios, so a diesel has a much greater engine braking effect then a petrol because of higher compression. Check the compression ratios between the cars and not the power output.
OP you might have a problem with your car because when you search on the internet , most people are shocked at how much the DSG appears to have an effect on slowing down.

 

[Damo H]

Your wrong damo. I never said the gearbox is the cause for engine braking, i said it adds to to perception of engine breakingeespecially in the DSG. As opposed to other automatics, the DSG has a hard connection between the engine and transmission through an automatic clutch. Therefore instead of just freewheeling when you let off the gas, the transmission is still connected to the engine. In most automatics, the lockup torque converter is unlocked and the wheels are no longer solidly connected to the engine when coasting. The DSG clutch only disengages when you about stop (except for shifting).*
Engine braking is mostly down to the compression ratios, so a diesel has a much greater engine braking effect then a petrol because of higher compression. Check the compression ratios between the cars and not the power output.
OP you might have a problem with your car because when you search on the internet , most people are shocked at how much the DSG appears to have an effect on slowing down.

Not quite sure how I'm wrong when I agree with what you've said. Wasn't replying to your post just the thread

Don't know enough about compression ratios and engines, but from the feel of engine braking, I drive a lot of cars as part of my job, and have to say my Leon's braking on a 170CR DSG when left in gear isn't great. Both MINI's and the BMW 320d I drive all have/had more engine braking.

Only things that I can think of that braked less where a Honda S2000 and Celica. Having said my previous car was quite heavy on the engine braking side. I put that down to the reduced supercharger pulley though. So it maybe just my own reference point.

 

[olly986]

Well thank you for your replies, and even if benjic2 is not a fan of my boxsters (even if like your Seat it came from VW lol) on my 2.5 the tiptronic drop of gear had a massive motor breaking in comparison to the FR, I did ask the Seat garage about it, and they confirm to me that the little gap of "nothing" between gears was normal.

I'll have to get use to it and drop gears a little earlier to get the same slowing effect.

Cheers