whats the difference

[Black95TSIawd]

whats the difference between, a tubular o2 housing from an aftermarket source such as rnr or victory performance, or the EVO o2 housing. They both look pretty good to me. Which would be better?

 

[TRBOTSI]

The EVO piece is a cast piece while the tubular ones are, well, tubular...

 

[Black95TSIawd]

well which one flows better is what i really want to know. Is there anyone that can help me?

 

[Wizard]

If designed properly, the tubulars will flow better. But at the expense of excessive heat radiation, prone to warping and low life. Cast pieces usually keep their shape better longer, don't crack as easily and keep the heat inside more, but weigh considerably more.

Street car should get cast. Especially if you drive it daily.

Wiz

 

[DrZiplok]

Note that the EVO O2 housing has the downpipe exit at a funny angle. You'll need a downpipe explicitly designed for it.

 

[Black95TSIawd]

oh damn i didnt think of that. What kinda downpipe would fit to it?

 

[DrZiplok]

A downpipe explicitly designed for the EVO O2 housing. Like I said. 8)

 

[KRAZYKOREAN]

Originally posted by DrZiplok
A downpipe explicitly designed for the EVO O2 housing. Like I said. 8)

Well I have a N-1 dowpipe and it bolted up fine...To my evo 02 housing..so with these there fine..