Guys, thanks for all the feedback.
The car actually managed 199.6 Bhp on the rolling road with 95 RON, which would indicate to me that there must be a reasonable improvement to the BHP increase due to having the turbo back Milltek system? The guys at AMD are assuming that the 99 RON will give me an extra 20-25 because the car is only pushing 240BHP and you guys are talking about between 260-280 BHP with almost the same mods as myself? I'm going back in about 3 weeks to get it on the rolling road again and hopefully see some improvement on the BHP, so I'll definitely let you all know........it seems though that nobody here on the forum has actually had the rolling road with 95 RON and then upped it to 99 RON for another test......... probably because I'm a muppet that was out of the remapping game for 10 years 
Stage 1 though mate yeah? In which case 260-280bhp is impossible on a stage 1, thats a stage 2 custom map with, as others have said, uprated fuel pump and I would imagine you'd need to go K04 or at the very least a better intercooler to see 260+ off a stage 2.
Only time you'd get that power is if you had a stock ED30 and mapped it, then you'd touch 300 with just the map.
Definately 99RON though mate!!! Always!
