I am wondering if a apexi N1 exhaust will fit on my 93 civic dx coupe (D15B7). Has anyone done this before and if so do you have any feedback on the installation process.
Thanks!

It will fit... Its a universal muffler meaning its just the muffler itself. You will need to get the piping and welding done yourself (or from a muffler shop) to make it fit.

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-brian

for a cat-back, the 93-95 dx coupe is the same as the 99-00 si.

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Yes, there's a "Replacement for Displacement". Its called Volumetric Efficiency.