Overhaulin'

Car Modification decreases performance?

I have suzuki swift car and I want to get it modified with following things. Spoiler, Hoods, Alloys, Exhaust tip etc etc... So I want to know that will the performance of the car be affected by these changes made to it...?

Public Comments

1. all of that stuff is cosmetic. Unless it all weighs alot more than the original, it wont affect performance
2. Anything that decreases car weight should help performance. None of your choices will add horsepower. Lighter wheels will decrease unsprung weight. If the rear spoiler is too tall it will slow you down and decrease fuel economy. A small OEM (original equipment manufactures) spoiler on the roof will help keep the read of the car deck and glass clean.
3. spoiler will create drag, not 'down-force' on high performance cars. If hood carbon fiber that will help with weight reduction. alloys if you change to a much bigger size will put your speedo out a little. exhaust tip no effect at all.
4. None of these items will affect the performance of your car. The are all personal preference for cosmetic looks only. Cold air intakes, low restriction exhaust and such will improve performance and mileage. good luck...
5. the spoiler can increase how the car handles, and depending on the weight and type of the hood, it can increase the speed. alloys are just cosmetic, but if they are heavy they can make the car slightly slower. and the exhaust can make the cars' emissions slightly smaller depending on the type of exhaust you get. but in the long run, they don't affect the cars performance, unless you're going to race in it.
6. Some things will and others won't. If you're not driving it a lot then you may not notice the difference. Spoiler, depends on the spoiler or "wing". Aside from being cosmetic spoilers do have a purpose. They direct air in such a way as to augment the dynamics of the air around the car. Many cars front wheel drive cars have rear spoilers to counteract the loss of rear traction at higher speeds. This is because the car faces pressure from static air as it drives through it. At higher speeds the air pressure in the front presses down on the hood creating lift in the rear. The extent of the effectiveness of the rear spoiler varies from brand to brand. This will affect high speed performance. Alloys and wheels in general are a huge augmentation to performance. So underrated are they that they often are not thought of as a performance part. Think, would you rather run 1/4 mile with slicks or touring tires. The rims holding the tires, determine the type of tires and handling characteristics of the car. They say to put shorter steelies on in the winter because of the engine torque differential. The higher you rev the engine the faster your tranny spins and ultimately the wheels. If you have fat 17s or larger, for every RPM you will have further travel than a 14" rim. In snow you will be spinning your tires without any grip because you may not have enough low rpm torque to move the tires and if you raise the rpms you loose grip due to larger travel (minute of circumference). 14s and low tires good for torque and low RPMs (Rally, autoX, hill climb) 17" and larger good for top end power if you wana race circuit, touring. Anyways, it's getting too long winded. Chances are you won't see much improvement if you don't challenge the speed limit but it all adds up no matter how minuscule the pluses are. Exhaust tip is purely cosmetic though... Good luck
7. it will help in conjunction with shaved heads, larger duration cam, valves reground !