Hi People, I recently had my 3 1/2 year old T6 Euro 6 102ps re-mapped with a Quantum Tuning map by a highly recommended and accredited mapping guy. I had the full power, up to 170ps map so was expecting great things. The van drove fine after re-mapping, but I was hard pushed to sense a big gain. It seemed a little more spritely in the mid range. I questioned this with the mapping guy and he assured me all was fine. The next day the van died with no prior indication anything was wrong. A local garage diagnosed turbo failure. I mentioned the re-map as it was out of warranty and naively thought his would help them with diagnostics. The local garage re-placed the turbo and fixed everything else trashed by oil being sucked in to the inlet tract. The van was test driven around the block by a mechanic. I paid my £2.2k and collected van and drove off down the road. A couple of miles later the new turbo failed catastrophically as I got into third gear. This time even more of the engine oil seems to have been drawn in to the inlet tract and gone down the exhaust as the new turbo expired. The local garage have now washed their hands of getting involved saying they believe the turbo failures were down to the mapping. I'm not convinced this is the case. They are also saying their warranty is void due to the re-mapping. They even sneakily put this on the invoice as I was settling up without mentioning it - although legally I do not believe it will hold any water because they cannot demonstrate I signed up to accept the liability - which I obviously wouldn't have. The mapping guy made it clear that for whatever reason the original VW map can easily be re-instated if requited.
Now I'm between a very big rock and a hard place as I rely on using this van for work. It's dead, they have my money and I'm back where I started. VW quoted £5k which is why I used the local garage.
Does anyone have a view on this in respect of the likelihood that a re-map could so easily fail the turbo?
It smacks of the local garage being out of their depth and not properly diagnosing the cause of the initial failure and therefore not fixing it and then trying to cover themselves with the warranty voiding statement on the invoice.