Hi guys, I made a decission the other day to upgrade from electric to nitro. Price was a factor so after a bit of reseach I went for a rs4 3 evo rtr. Got it on ebay for $400:00 Aus. So I am doing a bit of homework before it arrives in the next few days. Is there any flaws with the car? Do I need to make any changes - filters, tyres etc.? How long has this model been out for? It has the Viper body. I will only be bashing on the streets and carparks with it. Any hints, changes or ideas would be appreciated! One other thing - without seeing it I have been reading all the other comments and what is with the 2 speed, how do you know when you want the 2nd speed to kick in? Thanks for your replies.