Technically, there are none. However, in reality there are a few considerations we suggest you at address.
Firstly, you will need to be prepared to maintain the car properly. Whilst vehicle maintenance is important all the time, once you start modifying your car for increased performance, you must realize that correct maintenance takes on the utmost of importance.
Secondly, you must be prepared to accept the fact that with increased performance there is a chance that there will be increased strain on engine components. Whilst we will always outline all risks and chances of damage, in some circumstances the increased power will require the use of higher octane fuels, increased servicing, or other preventative measures.