I installed my new exhaust housing on the car, I got it from a honda guy in CA for a smokin deal. I broke a stud on in the header when I removed the old housing. I lucked out when I drilled out the stud and was able to chase/find the original threads with a tap. So its a 1.15 ar.
I also figured out what to do about my fueling issues by using a weldon 2345a:
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Slowest: 2017 Corvette Z06 - Z07 Trim
Fast: EvoIX SE Blouch 2.0xtr turbo E85
Faster: Evo IX MR PTE6266 E85 823WHP 9.90@147
Fastest: 92 Talon AWD 8.14 @ 171 MPH
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