I get a few people trying it on, usually in hot hatches, but then having come from the VW Golf scene I know I can be surprised so take it easy!
My sister hasa remapped mkV Golf GTi and we went head to head and I struggled!
Also a BMW 330 or 335 (couldn't see as it was dark) gave it some the other day and I was redlining it through 2nd and 3rd and up through 4th to get past which I was a little peeved about.
Most people just look at it when they hear the noise, but then where I live it's all Ferarris, Lambos, high end saloons, cabriolets and estates by Audi, BMW and Mercedes, so no one is too shocked to see an RS4 cabriolet....there are four including mine in my town (but mine's the best!

)
Will