Motech mapped DSG 'hesitation' after gear change - FIXED. R-TECH Reign supreme

[heavyd]

Interesting, I've never logged that block before
Which remap do you have? Shark had to tweak the signal from the dsg box to engine so it thought it was producing less torque than it actually was, think I gained around 50lbft this way. It went up by a further 15lbft after dsg software and 20bhp. I also ended up with a LOT of timing pull after revo dsg aswell

[alackofspeed]

Interesting, I've never logged that block before
Which remap do you have? Shark had to tweak the signal from the dsg box to engine so it thought it was producing less torque than it actually was, think I gained around 50lbft this way. It went up by a further 15lbft after dsg software and 20bhp. I also ended up with a LOT of timing pull after revo dsg aswell

Thanks for the information - it is good to learn that the dwell can be solved.

I'm disenclined to publicise the source of my map, as I don't want my posts to be misconstrued and cause bother. I trust you understand.

[heavyd]

Not really, but hope you get it sorted anyway

[Janner_Sy]

.

I'm disenclined to publicise the source of my map, as I don't want my posts to be misconstrued and cause bother. I trust you understand.

This is probably one of the best forums for being able to say anything you want, provided its clean

[alackofspeed]

Its not there to protect the box, its only something that shows up after tuning when some of the maps are not altered as required.

^^^^^What PDT said.

Having double-checked my VCDS logs, and driven the car looking for the delay/surge, there's certainly an issue at part load where the torque is far from the limit of the box.

Things like this are like a scratch..... once you know it's there, you keep noticing it. 

[jedi-knight83]

Well due to being pretty busy its taken me till now to go back and get another map file loaded. Im not 100% sure what was changed... but it didn't work. Still have the 'turbo lag' for 0.5 seconds after a full throttle gear change. Also the fuel economy seams terrible now.. Managed just 23mpg on a relatively easy 100 mile drive last night. was only doing 80-85 most the way.

[jedi-knight83]

does no one else with a dsg have this issue?

[chris s]

I think i have something similar but only appears at low speeds and revs, usually when dropping from third to second or fourth to third, the car seems to pull back briefly which sounds similar to your issue? It only happens when go manual mode though

[jedi-knight83]

no mine is when your changing up.

[RENNTAG]

I think i have something similar but only appears at low speeds and revs, usually when dropping from third to second or fourth to third, the car seems to pull back briefly which sounds similar to your issue? It only happens when go manual mode though

think this is just when ou change down when the box is expecting you to go up so takes a moment longer to select the gear you want.

[JMP]

So has anyone experienced this with k03 GTI Revo stg1, 2 or 2+ sw? I would assume they know what they are doing so this has been taken care of

[chris s]

I think i have something similar but only appears at low speeds and revs, usually when dropping from third to second or fourth to third, the car seems to pull back briefly which sounds similar to your issue? It only happens when go manual mode though

think this is just when ou change down when the box is expecting you to go up so takes a moment longer to select the gear you want.

I'd have thought that if you at low rev's and low speed the engine would have expected for me to change down in to a lower gear

[jedi-knight83]

I have had this once or twice while mapping DSG cars, feels like the engine is put on pause for a moment after the gearshift. Easy to resolve though, its a software based issue as the DSG cars have a fair few extra maps that need working on compared to Manuals.

When You say there are a couple of extra maps on a dsg... are these bits that should normally be done with a stage 1. Or are you talking about a separate DSG remap?

[PDT]

Im referring to the engine ECU map, nothing to do with the DSG ECU.

[jedi-knight83]

UPDATE...

Just got back from Motech again (http://www.motechperformance.co.uk/) and just wanted to give a thumbs up for their customer service  

Obviously after remapping my DSG GTI I had some 'lag' / 'hesitation' for a fraction of a second after a full throttle gear change. But I test drove one of their own cars today (2.0TFSI DSG) and that was perfect... so they obviously CAN correctly map this engine / gearbox combo...

Anyway... several log files and new maps later I've got a car that feels excellent again and with the problem 90% cured... It feels much better than before although I can still feel a slight hesitation still compared to their own car.

They seem committed to solving the issue though which is great to know that they dont just want to turn their back on difficult customers.

A couple of possible causes may be...

1. My car previously had a revo remap by the first owner. This was removed by the 2nd owner after lots of hassle with Revo. Revo never actually flash back the OEM stuff but instead put on their version of what standard should be. If they have done this incorrectly or put the wrong version back (for a different car or slightly difference ecu) then we could be trying to map a 'lame donkey'... So after xmas I'm going back and we are going to take the ecu out and check it properly to see if its actually got the correct software on there for the car.

2. Although there are no faults showing up I'm going to change spark plugs and look into something called an N74 valve. I've already replaced the DV with the revision D.

Anyway... Motech seem committed to finding the issue and giving me a car that performs like their demo car... even though it looks highly likely that its nothing to do with their map..