if car manufacturers could produce more pony's for less fuel consumption they'd fit bigger exhaust's to all their cars, to counter the noise factor they would just fit silencer's
the answer is bigger exhaust = more fuel consumption.
the effect the exhaust would have would really only be minimal and only over a small rpm range. the smaller exhaust/ stock is more suited to daily driving as stated before due to the exhaust pulses increasing low rpm efficency. tho. during accelartion and higher rpm a good header and correctly tuned diameter exhaust not only wil increase flow and power but will move this greater efficency point higher creating more useable midrange power and top end. now this is where more people would skew the result by being more heavy footed but in theory the engine from being more efficent in these higher load conditions would save fuel.
Is this the end of my car modding days? Buying a house says so...
in theoy yeah but it will lower the overall sound output, restrict flow and make your car sound like that crappy raspy noise you hear from na stock 4cyl with just an el cheapo cannon. i would be more inclined to removing the rear muffler all together
Is this the end of my car modding days? Buying a house says so...
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