Thread: 09 Nismo Z exhaust project
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Old 02-13-2014, 08:23 PM   #30 (permalink)
Megan370z
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Originally Posted by Chuck33079 View Post
Are you too far in to change to a 3.5" pipe? Going from two 2.5" pipes to a single 3" is a substantial reduction in flow. You're going to choke the car. Take a look at the first post below. The author's included a chart with all of the math.

Exhaust Tube Sizing: I did your Arithmetic for you!! - Exhaust - HybridZ
hehe.. this is why some people who need an optimized single exhaust should strongly buy my complete setup.

unless that somebody is of course doing a personal project
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