If you wanted a mental engine made for your RS, how would you choose your tuner?

How would you know the spec youve paid for is REALLY what you got?

Personally id want (BEFORE id paid owt) to see either RR/Dyno figs or ideally performance figs to show its not all talk and claims.

I know people talk about "proof" like its a big joke these days, but you gotta be a over trusting fool IMO to trust someone to give them thousands of your pounds just becuase they tell you the car will be 300bhp/700bhp/whatever, and do whatever performance times, and last so long with full reliability, with no proof apart from the tuners word for it.
Being taken for a drive in a claimed power car proves nothing either as "ass dynos" show nothing, unless youve experienced that power before, you cant even estimate the power, if its faster than youve ever experienced than youl belive it usually, even if its miles off.
And RR numbers that arnt the power you want, but the tuner says if the boost/revs/weather was different youd have that power, howd you know thats true?
Madness IMO.

RRs, esp flywheel figures are very random IMO, engine dyno is ok, obv you wont get that in car (esp when you put on a 3" zorst on a 500+bhp car), but its close enough.
Performance figures is ideal tho, you know the saying "The Black Dyno never lies..."

Its always kind of a leap of faith with giving money to a tuner, but some leaps are small, but some are fookin grand canyon, and thats just crazy.

I think thats why someone DOES prove something they turn into arrogant childish goons which isnt good either, but at least you got a REAL idea of where your moneys going.

It didnt used to be so bad with cossie tuning as everyone did pretty much the same old shit, but now the blinkers are off and people are thinking for themselfs the power is rising and you cant just look at tons of proven cars to estimate your performance, and without anything to compare to youd be very reluctant to put your money into it purely from claims.

(I can sooo see this becoming an argument but DONT, i would wanted to express my opinions, as i trust nobody, so certainly wouldnt want to spend cash just cause someone TELLS me somthing, its no better than buying Magic Beans is it?)