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christian370z · 08-11-2011, 11:16 PM

It has a lot to do with the cat-back. There are a number of factors but the most important ones that affect sound are whether the exhaust has an x pipe or H pipe, resonators (size, shape and internal design), and the mufflers (size, shape, and internal design). After looking at some videos on youtube, the Magnaflow exhaust has a bit of rasp even with the stock cats and that rasp would only be amplified with HFCs or test pipes. Here is my FI exhaust with HFCs for reference, go to around 1:00 and the 3:00 minute marks for WOT runs:

08-11-2011, 11:16 PM	#7 (permalink)
christian370z A True Z Fanatic Join Date: Jul 2010 Location: Newport Beach Posts: 3,900 Drives: 2010 370Z/Saab 900se Rep Power: 432	It has a lot to do with the cat-back. There are a number of factors but the most important ones that affect sound are whether the exhaust has an x pipe or H pipe, resonators (size, shape and internal design), and the mufflers (size, shape, and internal design). After looking at some videos on youtube, the Magnaflow exhaust has a bit of rasp even with the stock cats and that rasp would only be amplified with HFCs or test pipes. Here is my FI exhaust with HFCs for reference, go to around 1:00 and the 3:00 minute marks for WOT runs: __________________ -320whp / 259wftlbs- SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob