Some of you may find this rather long read over on SeatCupra.net interesting. Especially if you've had your car on the rollers and not got the results you expected.

http://www.seatcupra.net/forums/showpost.php?p=760760&postcount=191

It's a very good explanation, was a good bedtime read but !!! don't all tuners say exactly the same thing, after all they all invest a fortune in RR's .

The best thing is that people are happy with their car after any Mod or without them as they come out of the box.

RR to RR will always vary, the whole point of a RR is to snapshot before and afters or to get an on the day comparison to a fellow car.

I predict to within a couple of bhp what mine will read on some days based on others that I have had similar days with.

I'll tag this thread to read that thread later though

A very interesting read.