I am also getting ready to pull the trigger on this. I have a 2012 Nismo and just installed the Stillen Gen3, Swifts and 15/20 H&R's.... I talked with Tony (great guy btw) @ FI and he sold me on the long tube headers and TDX pipes (thinking 12" res. will be perfect) He said you should gain back a lot of lower/mid with this setup... If anyone has this PLEASE STEP FORWARD AND BE HEARD.. LOL.
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