Quote Originally Posted by dougie_504 View Post
So do you agree with GSi_PSi? Or TheSaint? Because GSi_PSi's post includes a quote from a bloke stating that 3" would never make less power at any point in the power band than a smaller exhaust, therefore putting to rest the false theory that you need smaller exhaust on Honda engines to maintain back pressure for low-end power.


I have a 60mm mild steel exhaust for my EG sedan with a 5Zigen muffler, but I never put it on because I was of the idea that my low-end would suffer and since I use it mostly for daily/suburban driving this would not be ideal compared to say...a 2" setup.

My header is excellent. 4-2-1 ceramic coated 2" outlet, made by 'Flowtech' which is a subsidiary of Holley in the USA, who I believe have a lot of R&D + reputation (although bankrupt now lol).

So if I were to get either 2" or 60mm high-flow cat and install the 60mm cat-back + muffler on my D16Y1 I shouldn't see any low-end power loss at all?


That would be great, because I thought it would make the car drive like a bit of a pig...
goin from the saints post....

from my understanding and experience, the low end lost will be noticeable, but no to the extent where its un drivable like what every keyboard warrior says, top end will feel great, since it will breath much better, but as far as loss of torque, i can still keep up with traffic on a everyday basis...

Im no expert, but i remember when i got epa'd, the oem exhaust did make the car feel more responsive down low, so i will have to agree about the part about exhaust back pressure, but top end, the aftermarket cat back makes the car breath much better