Internals on OEM Civic Si Exhaust....
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Internals on OEM Civic Si Exhaust....
Refresh my aging memory...
What is the diameter of the INLET of the OEM Si Exhaust, internal piping AND rear section UNDERNEATH the tip.
Thanks
- mike
What is the diameter of the INLET of the OEM Si Exhaust, internal piping AND rear section UNDERNEATH the tip.
Thanks
- mike
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