3 inch exhaust restrictions
#1
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3 inch exhaust restrictions
i am planning on merging my two 3 inch downpipes to a single 3 inch pipe over the axle. i really did not want to do that. but my car is lowered and i do not have allot of room under there.
so at what point the 3 inch pipe will be causing me serious back pressure ?
or has anyone done 4 inch pipe over the axle ? if so haw hard was it ?
so at what point the 3 inch pipe will be causing me serious back pressure ?
or has anyone done 4 inch pipe over the axle ? if so haw hard was it ?
#3
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The area inside a 3" pipe is 7.065 square inches. So to merge it together you would need a pipe that has double that to not affect backpressure. A 4" pipe has an area of 12.56 square inches. So backpressure would increase a little. I think dropping to a single 3" would really hurt you.