Quote:
Originally Posted by CuriousOne
Backpressure is not needed, but if you think it is, then that's cool. But I don't really think it is from everything I've learned and read about.
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It's not really just "do we think" - a great deal of money and resources have been invested in researching, modeling etc. this... What do you think manufacturers are tuning when they claim "tuned exhaust"? It'd be quite effective for them to just go with super big diameters rather than spend a LOT of money to do fluid flow analysis.... As a hint - they don't tune for sound
The tricky part.... In vehicle design, the engine exhaust manifold is typically the same regardless of application (vehicle to vehicle)... So the engineers have several options. They can tune for the designed pressure in the manifold itself, tune for some knowing more will come from other components, etc. Things are always a compromise, but these engineers are purty smart....
And to top everything off.... If you're outflowing your stock exhaust... You're not eco-driving
You should never outflow your intake or exhaust... If you do, it's not the mechanics holding you back - it's your driving style/technique
