Nissan 370Z Forum - View Single Post

ZBro16 · 07-20-2013, 09:37 AM

I would have to say that after break in, the two exhausts are very similar in sound inside the car. (I have the FI with 18" resonators). Both are very tolerable for driving on the interstate. I will say that the FI is quieter around town in the 40-50 MPH range. Both sound the same on the highway between 70-80 MPH.

Performance wise I can tell the mid range increase in the FI lasts a bit longer in the power band than the Ark, but both have that sweet spot around 4000 RPM.

The money shot with getting a notable performance increase is headers/TPs without a doubt. But both catbacks perform pretty well. I really wish the FI had a burnt tip application but I will live.

07-20-2013, 09:37 AM	#19 (permalink)
ZBro16 Enthusiast Member Join Date: Nov 2011 Location: Huntsville, AL Posts: 370 Drives: A Z. Rep Power: 14	I would have to say that after break in, the two exhausts are very similar in sound inside the car. (I have the FI with 18" resonators). Both are very tolerable for driving on the interstate. I will say that the FI is quieter around town in the 40-50 MPH range. Both sound the same on the highway between 70-80 MPH. Performance wise I can tell the mid range increase in the FI lasts a bit longer in the power band than the Ark, but both have that sweet spot around 4000 RPM. The money shot with getting a notable performance increase is headers/TPs without a doubt. But both catbacks perform pretty well. I really wish the FI had a burnt tip application but I will live.