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#1
4th April 2016, 02:25 PM
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gear box remap D3
Hi gents,
Anyone had any experiance with a gearbox remap? I was looking at doing this and combining it with a stage 2 remap.  I find the gearbox just lags on changes and could be better. How do i know which gearbox i have? Seems i need to know a DQ number. Thanks in advance. 
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 Audi A8 sport 3.0tdi Quattro, 19" wheels, 2tone leather, rear camera, heated seats, ami, Bose sound system, dab, xenon adaptive headlights, 4 zone climate control
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#2
4th April 2016, 02:55 PM
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MRC remapped mine slightly (changed something to deal with the extra torque) but said that it wasn't worth spending much time on IF all you want is quicker shifts... Something about it being a slow shifter. I think it's a bit of a lazy box but if anyone will know I guess it will be someone like MRC. Give them a bell. Won't cost anything to ask.
Mine is quite laggy in Sport mode as after the remap it just pulls like bu99ery all the way to the red line and when the TCU decides it needs to change gear, it's like someone has turned the engine off... Then the TCU makes its mind up to upchange a second later (which feels like 5 seconds when you're gunning it) and whoooaaaa..... off it gallops again toward the red line. I don't think you will ever get super speedy shifts from these older 6 speed boxes TBH.
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Lee 2017 Nissan Leaf Tekna Last edited by Lee S; 4th April 2016 at 02:58 PM.
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#3
4th April 2016, 06:27 PM
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Quote:
It seems to be the type of car/gearbox that loves to pull real hard and then you relax of the acceleration a little for a gear change and put your foot down again and away you go again with the surge of torque.It's just frustrating that we can't get the box to be more snappy. Plenty of companies claiming to change gear change to be more reactive but as you say there probably ain't much we can do with it. Check the link below. http://www.amdtuning.com/audi/a8s8/d...ftware-upgrade
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Audi A8 sport 3.0tdi Quattro, 19" wheels, 2tone leather, rear camera, heated seats, ami, Bose sound system, dab, xenon adaptive headlights, 4 zone climate control
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#4
4th April 2016, 06:40 PM
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I find if I really want to push on, driving in manual is best. Change up at an indicated 36-3700 and by the time it's thought about it and actually done it, it'll be sat just under 4k so still pulling but not stopping on the limiter first.
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#5
4th April 2016, 06:46 PM
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Correct me if I'm wrong, but I don't think any variant of any D3 has ever been fitted with a "DSG" gearbox. They were either CVT or ZF 6 Speed Tip-Tronic. DSG is a "direct-shift gearbox" with the double gearbox/clutch system and I don't think there has ever been one fitted to a D3. So AMD Tuning... really? Generic incorrect ad on the website or complete lack of A8 knowledge?
As I said, speak to MRC as they are the boys to ask. The box in mine is the same box as an RS6 I think and the Q7 and MRC told me NEVER to expect anything much in the way of snappy shifts. It's just not going to happen due to design. They may be able to tweak it slightly but tbh is it worth it? I don't find it lacking any more and I tend to drive around in "Drive" and floor it and off it goes. I very rarely use Sport mode to be honest as with the extra torque of the remap, "D" mode works a treat coupled with a heavy hoof and kickdown.
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Lee 2017 Nissan Leaf Tekna Last edited by Lee S; 4th April 2016 at 06:48 PM.
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#6
5th April 2016, 11:16 AM
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Ok well I think you have convinced me to leave it then. Just for future info if I purchase a 4.2tdi V8 quattro D4 is the gearbox different on that?
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Audi A8 sport 3.0tdi Quattro, 19" wheels, 2tone leather, rear camera, heated seats, ami, Bose sound system, dab, xenon adaptive headlights, 4 zone climate control
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#7
5th April 2016, 01:01 PM
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Yes. That's an 8 speed ZF and I wouldn't touch that either as it is a more modern unit but using the same technology as far as I know. Shifts may be a touch quicker on the new ones, but maybe someone who has had D3 and then D4 will be along to give you a more accurate view.
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Lee 2017 Nissan Leaf Tekna
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#8
30th June 2016, 03:47 PM
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The changes were pretty slick from factory, and even quicker after the MRC remap. I mean instant. They had to be. 700 ponies would see 60 gone in sub 4 secs, so a rapid change was needed. Smooth as silk too, although you could catch it out when using tiptronic.... Our Q7, and most of my D3's have had a very 'comfortable' shift pattern on the box, no real urgency. The D3 S8 though, and my C6 S6, both had a bit more urgency about them. My conclusion would be that the 'S' petrols are set up for a quicker change, and the 8's and diesels are set more for comfort, which all makes sense. Perhaps the diesels have a significant flywheel effect, and rapid changes are just not possible ? I know the V10 is a very lightweight engine, and changes revs like a motorbike. Its like no other car engine I've ever driven....  The D4 8 speed box is like fluid. You never know its changed. Its weird, its gone through several gears before you even hit 20mph. If you didn't have an indicator the dash, you'd never know
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#9
22nd April 2016, 05:51 AM
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be interesting to hear your findings on the tcu map Lee, it bugs me that the box doesn't seem to use the torque of the V8 very well; like you want to give it a poke, rather than just riding the wave of torque you have to wait for it to decide it wants to downshift and it gets to a point where the revs are too far up there you're completely missing the torque band and your move ends up taking longer and feeling slower as a result.
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#10
30th June 2016, 07:46 PM
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Had a firmware update on the box on My D3 S8 It was done while the fluid was replaced with the newer spec stuff.
It changes gear fine, no noticeable difference from before. One thing Mcakies said though, don't go looking for faster downchanges, you won't get them, its the nature of this gearbox. It changes up OK, but could do with snappier downshifts. I have a 3.0 TDI VW which has an 8 speed DSG box, which is fantastic
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