Whilst a good TCU remap can improve gearchanges its main value is in raising the redline and removing any torque limit, neither of which are going to be really needed for a 2.0TFSI (although the redline is worth further discussion).
Your description of lag when pulling away at roundabouts and junctions should be nothing to do with transmission (if your tyres are OK) as the car should be in 1st gear and have no need to change. Assuming you are not getting clutchpack slip (which should cause a DTC anyway) then the most likely reason is simple turbo lag.
The main purpose of an ECU remap will be to raise the pressure at which the wastegate opens and change the fuel map for the higher air mass across the relevant part of the rev range. As such it does not affect lag and indeed there is not a great deal that can be done about that without hardware changes. What can be done is to change the throttle response, which is what Audi have done in the ADS dynamic setting. This just tends to work the engine harder at low revs than you expect and so compensates a little for the lag. Of course you can also do the same just be pressing the pedal harder, as I'm sure you have learned to do!
I can't comment on where to go in Scotland but I can vouch for MRC maps. If DHA gets ECU files from MRC then they will be decent remaps. I believe they are fitting a new dyno soon? Ask them if they actually tweak the maps on the Dyno like MRC do. It's not essential, but gets optimal performance. Don't underrate the value of a dyno: When the "before" matches the figures that Audi quote for your car, it makes the "after" figures believable. Without that you might always be wondering if the map is what the tuner says it is...
Thanks , I’ve read numerous post on several forum about the S-Tronic / dsg lag and spoken to Audi tech about it. It’s just a feature apparently .
Maybe some are worse than others due to age or how warm oil is.
- have you a S-Tronic or experienced it a borrowed car ?
It’s really noticeable, especially when engine / gearbox is cold.
Hard to explain if you haven’t driven one.
Basically from a standstill it’s worse, you’re at a junction see a small gap in traffic , put your foot down fairly hard , car does nothing for 1 sec , then it feels like clutch rides and car trundles out slowly , then rev rise to where they should be relative to pedal and seems like transmission catches up / engages fully and you have full revs and power - like a rubber band effect.
Plus because you are getting nothing much from transmission you tend to give more right foot.
3-4 secs go by , you’ve only edged out one car’s length with no power then you get a surge of all power, transmission , traction and you’re catapulted out rather dangerously, whilst the oncoming car is having to slow for you.
In a manual ,you are straight out (and quicker) when you put power down , whatever car you have.
The way I try to combat is always be rolling if you can or just let brake off and car take off with out any power then feather it in .
sometimes you forget this and just need to make a gap , which is where things get scary.
I have read it’s a safety feature to give people a chance if they hit accelerator by accident.
I also think it’s software / electronic override saving the clutch stress, as I say it’sa delay , and rubberband power / clutch feathering feeling.
Definitely not turbo lag in my eyes. The car just doesn’t move when you hit the accelerator .
Cheers
