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Catback does not require tune. You can do this at anytime. Cat or no cat aftermarket headers are illegal. Here is what I would due.
OFT tune
Tomie UEL catless/JDL UEL/ Gruppe-s UEL
Keep stock front pipe and overpipe
Catback options
MXP SP
R400
CSG touring
These would be my top picks.
I would due the header with OFT tablet. See how you like the noise with just a header. From their you can judge how much louder or tone you want.
Hope this helps
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2013 Series 10 FRS #553
RCE T2's, SPC LCAs -4/2.6 camber
JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85
RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid
ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's
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