as regards to fuel, when running 99 on standard car for this market it will be mapped to run on 95 so you won't get any gains untill its mapped when your telling the ecu to make use of better quality fuel such as 99. you can still take the gains of shell v power with its quality and addictives to help clean the valves etc over a very long period time of continue use if you don't mind spending the money. my only advise is don't use the crappy supermarket fuels. tescos own fuel is fine though. they're 99 momentum gave me the most torque. just low sulphor ones such as asda, sainsburys, jet, morrisions aren't what i would personally use unless i had to.