HomemadeTurbo - DIY Turbo Forum - Interesting figures...

Just thought a few notes regarding performance mods on cars may be interesting. (found while surfing, not MY figures)

1) Wings - Any wing fitted at an horizontal angle offset between 6 to 20 degrees adds aproximately 60kg (132lbs) of downforce at 100km/hour (62mph).

2) Mufflers - Add less than 3% power gain on a naturally aspirated car and less than 5% on a turbocharged car without a customised exhaust. Add a custom manifold or dump pipe back exhaust and you can increase that to 10% and 20% respectively.

3) Air filter - good for 3%-10% and is very dependent on the car.

4) Bodykits. -Veilside and Bomex kits are actually quite good for front downforce and reducing air turbulance, but most would only provide a marked gain in performance if the car was travelling in excess of 300km/h (284mph).

5) For the price of a painted bodykit for your standard civic, you could purchase a filter,ecu chip,headers and exhaust that would be good for about a 40% power increase on an EK3 Civic (1500cc) Thats pretty respectable!

I converted the metric to SAE, so they aren't quite EXACT, but close enough for goverment work.