If everything is double starting from the header, I would think so. If it is single from the header and double at the end, it is for better looking. The whole purpose of exhaust system is to keep the noise and pollution down. As you might have noticed, the race car is very noisy and it is not street legal!
Quote:
Originally Posted by FAR888  Thanks for that AsianML - Even though it doesn't mention anything about twin exhaust pipes and is in relation to Volkswagens!
However, the general point which I found edifying, was found in the 'performance' section of the article:
'The performance of an engine is proportional to the amount of energy you can release (and harness) by burning fuel and therefore the more fuel you burn (assuming good combustion) the better the performance. To do this, not only do you have to get the fuel and air into the engine quickly but you have to get it out quickly.'
The deduction I made was that to get better performance out of an engine you need to expel the used energy (fumes, burnt fuel and air) quickly - So two exhausts pipes would do that better than one exhaust pipe would.
What do others say? |