my god merli if it was that important to you i would have told you, my car was tuned on c16 by c&v it wasnt an aggressive tune so i assumed that the c16 i had in my tank, which is about 5 litres or so, and the 10 or so litres of pulp i used would act like a booster to the 98 ron making it hopefully like 100ron or so. i ran the car at full throttle down the track, with a 8500 launch, felt a little flutery but i didnt hear any pinging( detonation). im not hear to lie to anyone or proove to anyone that my car is a machine, 2rismo was there and he smelt the exhasut and he even saw it wasnt on c16 fuel, and also i ran the same time, this week as last week casue, last week i had to much wheel spin and this week i think i got the power to the ground, so if you think im lieing its cool i dont mind, i dont want to give you the wrong impression, but you can asl adrian or buster, they were with me, another thing if you are getting your car tuned on c16 ask if its gonna be at its peak or not as aggressive, casue i wouldnt recommend using pulp with a c16 unless you know you can afford to rebuild you motor, and please merli dont go thinking im some hero or something casue i can afford to build my motor casue if you want a fast car you have to be able to afford to fix it in case of things like rebuilds. amen to that.