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NickTurnon · 07-03-2012, 10:04 AM

2. Is a tune (up rev) necessary for the above set up and if so how much does it improve the system. --- A tune will be necessary if you make any changes to the CATS or Headers because a light will pop up on your dash. But really you should get a tune when all your mods, or any significant changes are made.

3. Let's say hypothetically headers/catalytic plus the CBE gives the car an additional 30 hp how much is from the headers/catalytic alone? I think from High Flow Cats & Headers people are getting around 15-20 extra hp but thats mostly from HFC, I believe.

4. Is an upgraded CBE truly necessary over stock when switching headers/catalytic? Or is mostly a question of sound. Watch this video on youtube. Its someone that kept the stock exhaust on and just got HFC. 370z Berk HFC - YouTube

If getting HFC's aren't what your looking to do- spend $250 bucks and get AAMs for the time being. You will get a great ROAR.

07-03-2012, 10:04 AM	#3 (permalink)
NickTurnon A True Z Fanatic Join Date: Jul 2011 Location: Scottsdale Age: 33 Posts: 1,636 Drives: 09 BS 7AT 370z Rep Power: 18	2. Is a tune (up rev) necessary for the above set up and if so how much does it improve the system. --- A tune will be necessary if you make any changes to the CATS or Headers because a light will pop up on your dash. But really you should get a tune when all your mods, or any significant changes are made. 3. Let's say hypothetically headers/catalytic plus the CBE gives the car an additional 30 hp how much is from the headers/catalytic alone? I think from High Flow Cats & Headers people are getting around 15-20 extra hp but thats mostly from HFC, I believe. 4. Is an upgraded CBE truly necessary over stock when switching headers/catalytic? Or is mostly a question of sound. Watch this video on youtube. Its someone that kept the stock exhaust on and just got HFC. 370z Berk HFC - YouTube If getting HFC's aren't what your looking to do- spend $250 bucks and get AAMs for the time being. You will get a great ROAR.