Nissan 370Z Forum - View Single Post

EVL370 · 04-24-2010, 11:06 PM

Ok, I'm sure this has been spoken of before. However I'm unable to find it.

Whats up with all the different HP numbers with HFC's?

The berk cats show some crazy gains of like 15hp by themselves.

However the F.I cats only had a gain of 4 or 5 hp when dynoed with the FI cat back system.

I know the F.I cell count is higher. However would that matter?

So is it a simple case of HFC (15hp)+ Exhaust (18hp) = 33hp gain?

How do the numbers work when pairing HFC's with a cat back exhaust?

04-24-2010, 11:06 PM	#1 (permalink)
EVL370 Base Member Join Date: Dec 2009 Location: Melbourne Posts: 209 Drives: Nissan 370Z Rep Power: 16	The great HFC question for newbies Ok, I'm sure this has been spoken of before. However I'm unable to find it. Whats up with all the different HP numbers with HFC's? The berk cats show some crazy gains of like 15hp by themselves. However the F.I cats only had a gain of 4 or 5 hp when dynoed with the FI cat back system. I know the F.I cell count is higher. However would that matter? So is it a simple case of HFC (15hp)+ Exhaust (18hp) = 33hp gain? How do the numbers work when pairing HFC's with a cat back exhaust?