Here are some basic rules if you want to join TCS

1. Tamiya cars only
2. Tamiya hop up only designated for that particular model
3. No re-engineering
4. No exploitation of TCS rules deficiency ( loop holes )

In return, you get :

1. fair fight among drivers
2. less headache eg. attempting to re-engineering or exploitation of rules.

Beleive it or not : last year winner at Tamiya Asia Cup was using almost bare bone TT-01 ( alluminium shaft and TRF damper only ).