Engine tuning is the modification of the
internal combustion engine to get better engine performance. Tuning of the engine includes a wider parameter including the modification of the carburetor, replacement of air filters, inspection of emission controls, modification of the ignition system, engine overhauls, addition of advanced engine gadgets, re-fastening of cylinder belts, and swapping engines. All these activities are performed with one common aim - enhanced performance, either in terms of fuel economy or power output.
Earlier the idling speed, carburetor balance, ignition timings, and distributor point gaps had to be set at regular intervals of time, but today with advanced technology, the issue has been resolved. For modern engines, most of these activities are automatic but yet they need periodic calibration to maintain continued good performance.
Suspension tuning is the modification of the springs, shock absorbers, sway bars, and other related components of the car. The main motive of suspension tuning is to have an optimal ground clearance. Shorter and stiffer suspension springs help to deliver precise driving and cornering performance.
The main function of the shock absorbers is to maintain the vertical weight on the car tyres and help tyres sustain good traction control. Stiffer shock absorbers help to enhance the weight on car tyres, eventually helping the tyres have good road contact. Stiffer sway bars are a good option to improve tyre grip and enhance car handling. Various other components like strut bars and suspension belts are also tuned to maintain good suspension geometry and increase ground clearance.