I'm currently grinding for Credits on Special Stage Route X, which, even though the grind is slow, is a decent excuse to Tune my ride to the highest possible Top Speed it can get. It's a ZZII, since it's very cheap to maintain compared to the McLaren F1 & Bugatti Veyron, which cost the equivalent of 6 or so Races to repait the chassis, compared to the half Race for the ZZII. However, I'm not sure how some of the Tuning Options work. So far, I've only really changed the Gearbox, Acceleration Sensitivity & reduced the Aero Downforce, but I'd like to know if I can go further. Right now, I can go around 437 KPH or 485 KPH with Nitro on. Anyone who can help me raise the Top Speed even further than that? I'd prefer having at least a little cornering ability, so no Bugatti Beyron-style Drag Race Set-Up.