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The stock Y is pretty restrictive, but I don't if it would be worth it to go back and just switch that out, maybe if you replaced from the cats on back, it would be worth it. If you notice the piping shrinks down a bit going in and out of the resonators. Probably won't help with MPG or torque but might give you a little extra top end. IMO
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CC LE Smoke
JBA Cat Back Exhaust
K&N CAI
10" Fosgate He2
More to come!!!!!!!!!!!!!!!!!!!!!!!!!
"Life whilsts itself while you are preparing to live"
-Emerson
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