I've got RacingLine stage 1 on my TT, had it done a few weeks ago. It was a standard file but it is constantly revised, I've found a lot more pull but also some increased noise (pops & bangs) from the exhaust on upshifts. Pleased with the result, I've gone from 169kw to 210-220kw from just stage 1. I'm basing that on another TT that had a dyno done after RacingLine stage 1. Stage 2 is 'free', just the additional hardware purchasing is required.
They are working on a Scirocco at Harding at the moment, full race gear installed, worth a look.
BMW Z4 (2019)
Audi TT quattro (2015), s-line in Nano Grey - sold
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