whats the price difference and from a stage one can you just upgrade or do you need other mods
+/- R800 upgrade for Revo.
Stage 1 - can work on a standard car.
Stage 2 - in some cars need some hardware mods like DP, a Golf R can do stage 2 standard.
I have Stage 1, DP + De cat, intake, bigger intercooler - standard mods.