Queitest exhaust with FI long tube headers?
 

So as the title says what is the quietest exhaust (quieter than 18inch res if exhaust) with long tube headers? Also does changing exhaust effect tune if it’s tuned to fast intention exhaust? Vancouver is getting crazy with vehicle inspections.

Find a factory Nismo exhaust.

Yeah. You won't find anything quieter than OEM. I'm running ART pipes to AAM S-Line midpipe to Nismo muffler. Slightly louder than stock, but from a visual inspection, everything looks stock (Nismo stock).

You have sound clips of this? I have non-res TP and a full Nismo CBE but wonder if changing midpipes out would make it too loud.

Edit: Here are a couple clips of mine for reference -
2nd gear WOT - https://youtu.be/zC9PshQAqw4
Revs/takeoff - https://youtu.be/5mr-ZwSYZyo

It shouldn’t be too loud as the Nismo muffler is doing most of the heavy lifting as far as dampening the sound. I forgot to mention that I have vibrant GESI high flow cats custom welded into the AAM mid pipe which helps tone down the loudness and the rasp. I honestly think it’s not too loud. In fact I think the supercharger whine coming from the front is louder than the exhaust in the rear lol.

A side by side HFC + OEM Nismo vs HFC + aftermarket