tamiya 1/10 rc car faster

[tuscrv8]

i got my lads a tamiya tl-01 rc car off ebay a week or so ago.
and they have started to race it againts a friends simular rc car on the local car park. but as dads are the spirit of competition has raised its head. so how do i make it quicker without spending a fortune

car is totally standard apart from a m tronics eco27 speed controller



thanks

[tuscrv8]

thanks for the info

i would like to pick up another car as the lads are fighting over this one