The Car Tuning Guide look at the 9 tuning options. Which are the best modifications for the 9. Renault have produced some interesting cars over the years. The 9s really will benefit from a hike in the power, alternatively reducing the weight will help to improve the performance of your car. Top of your list for tuning mods will be a fuel boost valve (for a snappy throttle response) and a good quality panel air filter. A fast road cam will make quite a reasonable difference to the peak power of you 9.
NOTE: BHP POWER GAINS ARE PROPORTIONAL TO YOUR BASE BHP. The more you start with the better your gain will be. Do an engine swap rather than waste time on small engines. Internal engine modifications that should be high up on your list would be polishing and porting the head. Some 9 owners report increased MPG with a flowed head. The 9s handling can be dramatically improved with some choice suspension modifications. To avoid other problems you should lower the car no more than 36mm.
Soon the car tuning guide will offer more detailed and in depth tuning guides for the 9 so bookmark this site and we hope to see you again.