Dont worry man I know you guys are trying to help, and I actually really appreciate it. Here's what jez quoted me through sxoc a few months ago and it was the same last week when I spoke to him.
"We'll map to whatever fuel you have in the car. If we map on 97 it'll be fine on 99. But if we map on 99 then it may not be ok on 97. I'd recommend VPower/Tesco 99 for the best performance. Sainsburys/BP are about the same.
Heres the mapping costs:
H-Dev board, custom remap using Nistune software: £349.99
Nistune board, custom remap using Nistune software: £539.98
Board fitting (either board above): £29.99
Nistune software: £163.39
Consult/Nistune cable: £49.99"
Just for me money is tight with trying to keep the mrs happy (she hates me spending money on my car
!), running a mortgage etc etc. So I was really weighing up the options out loud. If I was money free nistune would be my first port of call, I just don't know if I could scrape together another 190, as I have tax and two new tyres to buy! Argh why can't I be rich! Lol. Life would be easy