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Do you have a coupe or an sedan?

If you have a sedan you are in great shape for my suggestion.

#1 get a B pipe for a coupe, this allows you to move your cat 2 inches back and allows a better location for the e cut out.
(you will have to extend o2 sensor wires though)

#2 you want to cut your down pipe as close as you can to the cat
#3 install the y pipe with e cut out just in front of the cat.
#4 buy a comptech manifold
 

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Discussion Starter · #6 ·
Do you have a coupe or an sedan?

If you have a sedan you are in great shape for my suggestion.

#1 get a B pipe for a coupe, this allows you to move your cat 2 inches back and allows a better location for the e cut out.
(you will have to extend o2 sensor wires though)

#2 you want to cut your down pipe as close as you can to the cat
#3 install the y pipe with e cut out just in front of the cat.
#4 buy a comptech manifold
got a sedan, why comptech manifold?
 

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I had one on my WRX it was awesome I loved it. stock exhaust just cruising then at a light open it up and people are like OMG an airplane is next to me. haha turbo was so loud. open 4inch bellmouth downpipe and 18PSI ahhhh she is missed.
 
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