can't decide True Duals OR y-pipe /catback
Now onto the question from pro-built7. I personally went with the ORY and 3" catback. Clearance is generally better and from what Ive seen unless you are a very high horse power application you probably are not going to see much gain with the true dual set up.

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I'm running 3" true duals from collector to exhaust tip.
I did not lose lowend torque
I did not lose ground clearance
I can let my axle hang fine without dropping the exhaust
I have never once scraped any part of my exhaust besides the header collectors on speed bumps and my car is lowered ~1.2"
As far as the sound I daily drive mine fine, I'm running spiral flows run out the back and its not much louder inside the car than my hooker catback was. I will never go back to a catback again just because of the sound alone.
...but I love the sound of TDs...Did I pick up anything with them? I don't know..Unfortunately I made some other changes before I went to the track...
--Alan
https://ls1tech.com/forums/lt1-lt4-modifications/639256-pix-new-3-stainless-true-duals.html
--Alan









