Dont want to use names, but i cant do examples otherwise
Id happily use Karl (ignoring his attitude towards me, lol) for anything upto a RS500 type engine for a cossie providing the price was right.
Same with his mapping, nobodys got a problem, seems spot bollock on.
But id be very sus with an engine like his own, as for all the proof that anyone has, it could be nowhere near as good as claimed, and thats a LOT of money to go on trust of someones word. Not saying it ISNT as good as he says, in all likelyness it IS, but who knows? You wouldnt!
But i think lil Rodneys Saff proves that money is pretty safe in MADs hands for that conversion.
I dont really think any company have proved that their big power RST conversions are deffo like the claims yet have they barring Sunnys FRST?
Some good results, but not nececarily 330+ or whatever barring Sunny.
Other companies apart from MAD get the business no problem tho so obviously people are far happier taking peoples word for as a good reason to take 1000s of pounds of them than i am!
(Got to realise i only talking about engine spec that ARNT yet common, with common specs its far easier to see who to trust)