The tuners in question in the topic I posted, and also the ones who did my car, HAVE done tons of these cars in VW, SEAT, Audi and Skoda guise...but they still managed to knack up Marshall's car big time with a crap map. So...go for a reputable big name. Proper big name. Sedox apparently wasn't big enough of a name
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This totally sums the job up.
These tuners in question who have done loads have usually done one or two.
In my case it took me about 2 months to start doubting my software.
After another visit and another map my car seemed to make all sorts of noises and drove terrible.
As usual the tuner Sedox performance blamed the car saying its a hardware problem and not a software problem.
After a battery reset the car behaved different again.
In the end after hours of research and testing I went to Revo.
They flashed the car stock which solved my problems then flashed stage 1 and the difference is huge.
Normally I'd say buy cheap buy twice but I paid £383 at Sedox performance and have now had to pay £399 for Revo to sort my car.
Not much price difference but a huge difference in the car.
Sedox will not give me a refund so I hope they never tune another car again.