- 10

- NSW, Sydney
- Kazuki-Miyazaki
Theres a issue with my cars, well a few. I decided to change my gear ratios up to 420(Max speed) on my C6, So I raced it and decided to put the original gear ratio which was 360. So I raced it, Top speed was 343! I decided to buy another C6 (because this had previously happend to my Aventador) tuned it with parts etc like my original C6 and it still tops at 343! any help.