Porting

[rotaryguy481]

How big of a port can u go on an s4 with stock ECU

[rotaryguy481]

and also can u take the smog pump off with out any bad side effects i have heard that its bad to do so

[Ender]

Probably just a basic street port, but I'm not an expert on that. I did port my TII's motor myself, but I just did a street port and I have made other modifications.

If you still have a catalytic converter you'll probably want to keep the air pump, removing it can shorten your cat's life. If it were me, I'd pull the cat and the pump, and the EGR... and so on. Which is what I did to mine.

[RETed]

Why you wanna port?
Are you doing it cause you need to rebuild?

What else mods do you have?
If you're running a stock exhaust, it's almost a waste of time.


-Ted

[Nismo]

Why you wanna port?
Are you doing it cause you need to rebuild?

What else mods do you have?
If you're running a stock exhaust, it's almost a waste of time.


-Ted

So he can't put a different exhaust on later, when he might have more money? In the short term it might be a waste of time.

[TitaniumTT]

There is just not enough information here at all..... lets start with,

n/a or turbo?
Other Mods?
Planned mods?
etc etc etc

I like Ted's question though.... why? Are you rebuilding it or cracking open a perfectly good engine?

[rotaryguy481]

its an N/A i have a catless exhaust and an intake about it for now and i have another n/a motor that im rebuilding thats why i asked what all do i need to remove the smog pump