Quote:
Originally Posted by NightRydaSS
o really? i thought "higher flow" is what they check like the amount of exhaust volume that comes out?
so what changes emissions then? The size of your heads and cam?
how about "high flow" cats? I kno most catted-y's come with "high flow". would that change anything? I just want to make sure i have a clear understanding.
|
I may be mistaken- don't take my word as gospel:
But in order to increase emissions, you need to increase the amount of combustion with more air/fuel- which means you get more emissions with things like a bigger cam, heads, engine size, or inefficient air/fuel ratio.
Once the mixture is burned and sent out the exhaust valves, nothing changes its makeup except for the cat- everything else is just metal or fiberglass muffling to keep noise down or redirect the gases under the car.
High flow cats will change your emissions if they are high-flow because of lower efficacy.