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60mm vs 70mm exhaust on a b18c?

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Old 03-21-2012, 06:32 AM   #1
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Default 60mm vs 70mm exhaust on a b18c?

are there any significant gains to be had by going from a 60 to 70mm exhaust on a b18cr engine? most of the dynos ive seen are 3in exhausts so im not sure if its relevant to my case
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Old 03-21-2012, 11:06 PM   #2
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Default Re: 60mm vs 70mm exhaust on a b18c?

If a 3" makes more power over a 2.5", then what does that tell you?
My AP1 build thread
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Old 03-22-2012, 04:15 AM   #3
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Default Re: 60mm vs 70mm exhaust on a b18c?

i went with a 70 mm exhaust on my setup
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Old 03-22-2012, 04:21 AM   #4
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Default Re: 60mm vs 70mm exhaust on a b18c?

I have a 70mm, about 3whp loose vs 3.0''.
I should went 3.0''.
All Motor B18CR 81.5mm YvesBuilt
223whp/148wtq SAE PrecisionAutoCanada tuned
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