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AG1LE · 06-19-2014, 09:08 PM

Headers require a tune (=warranty issues), HF cats do not. The HF cats alone make a big difference in sound, especially with fuse pull.

06-19-2014, 09:08 PM	#13
AG1LE Drives: '14 1LE Join Date: Nov 2013 Location: NJ Posts: 2,438	Headers require a tune (=warranty issues), HF cats do not. The HF cats alone make a big difference in sound, especially with fuse pull.