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Question 2.5" collector pipe to 2.3" exhaust on d16 will it work?

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Old 10-04-2010, 02:10 PM
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Default Question 2.5" collector pipe to 2.3" exhaust on d16 will it work?

Running a WSII exhaust 60mm, about 2.3" catback exhaust with a 2.5" High Flow cat and stock y8 exhaust manifold. Im lookin at getting the Tri Y header 4-2-1 that rins to a 2.5" collector pipe. Will this require me to increase the size of my exhaust system?

Going to be running a stage 2 ZEX Cam in december with springs and retainers
Old 10-04-2010, 05:49 PM
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Default Re: Question 2.5" collector pipe to 2.3" exhaust on d16 will it work?

sounds plenty big enough for a N/A D16
Old 10-04-2010, 05:51 PM
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Default Re: Question 2.5" collector pipe to 2.3" exhaust on d16 will it work?

2.5 is plenty for a d16. no need to get carried away
Old 10-05-2010, 06:33 AM
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Default Re: Question 2.5" collector pipe to 2.3" exhaust on d16 will it work?

So your saying I would have to increase the pipe size of the system? I cant have the drop from 2.5" collector to 2.3" catback?
Old 10-05-2010, 10:21 AM
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Default Re: Question 2.5" collector pipe to 2.3" exhaust on d16 will it work?

you could but the flow might not like the funneling into a smaller size piping.
Old 10-05-2010, 11:04 AM
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Default Re: Question 2.5" collector pipe to 2.3" exhaust on d16 will it work?

im just curious what type of intake are you running ?
Old 10-05-2010, 12:39 PM
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Default Re: Question 2.5" collector pipe to 2.3" exhaust on d16 will it work?

Originally Posted by jdmjay82
im just curious what type of intake are you running ?
2.5 inch custom made intake. Mandrel bent pipe cut into proper pieces to run, coated with textured heat resistant paint on outer surface and gloss heat resistance pain on inner with K&N filter. During winter, pipe stays cool with driving all day, different story in summer. 100 degrees out here in summer

Also running upgraded fuel system at a higher pressure with a GSR throttle body and ported intake
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