SWEET!... now why can't the Mother Ship hook us up like THAT!!
you said in order to implement these OEM headers.. would require the HR cats..? (those bad boys and NOT cheap..!)
dude.. you are such a BAD influence... my XMAS list keeps getting LONGER and LONGER!!

 

People are selling used HR headers for $100 and HR cat for $100. Or you could go with HR HFCs for $400.

 

Good job Dave. Nice experiment you got going on.

 

do you think the hr cats will set off the check engine light.

 

They shouldn't as long as their is a cat to clean up the exhaust before it hits the o2's after the cats.

 

so the these ypipes only came off the 07 350z?

 

What he said.

 

....and the 08s.

 

whats better this y pipe or the nismo y pipe?

 

wait a second, the 08 g35's have the HR right? so does that mean I can take that y-pipe off and put it on my 06 350z?

 

Absolutely. Don't tell other Z owners though. We don't want them in on the secret

 

Too late. :P

 

With this much interest in headers/Cats of the Z's, lets hope they dont start jacking the price...supply and demand!!

 

so do you have to get hr cats to use the hr headers, or will my aftermarket 03 cats work with them?

 

Yes, you have to get HR cats. The lengths are different.