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Old 04-30-2019, 02:52 PM   #1134
James Russels
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Join Date: Sep 2015
Drives: 2013 FRS
Location: Chicago, IL
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Quote:
Originally Posted by ATL BRZ View Post
Adapters like that are not ideal and will allow leaks. If you have a 2.5" overpipe just leave it be and order your kit with the 2.5" downpipe exit flange. 2.5" exhaust will not become a restriction until you're making far beyond the power limits of a stock engine (500+)
I've read sources saying that a 3" is recommended for as low as 350 hp. Do you know where I can find these calculations for our platform?

Quote:
Originally Posted by ATL BRZ View Post
You can complete the install with basic hand tools and metric sockets but a set of crows foot socket adapters will come in handy when getting to all six manifold nuts
Thanks - any spare hardware you'd recommend I have available? Nuts, bolts, washers, gaskets, etc?
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