DNA Headers 2011 Yukon XL 4WD

[John Lum]

They look alot like my Speed Engineering headers.View attachment 204179View attachment 204180

pretty much the same, did yours come with a cross over or did you want true duals?

 

[Tonyrodz]

View attachment 204209 View attachment 204209 View attachment 204210 View attachment 204209 View attachment 204210 View attachment 204211

What's the purpose for those on the O2's?

 

[Tonyrodz]

pretty much the same, did yours come with a cross over or did you want true duals?

I bought the crossover.

 

[kbuskill]

What's the purpose for those on the O2's?

It should keep him from having to program the rear O2 sensors to be ignored... it will make the reading from the rear O2 sensors appear to have a catalytic converter even though there is none.

Lots of guys use these instead...

 

[John Lum]

Ya i was going to buy those but I was impatient and didn't want to waste time or money i had tubing lying around so i figured what the heck if it dont work then i'll buy the non foulers. So far it's been 6 days and no CEL. I guess its working.

 

[Alexquade]

I put the same ones on my 11 Yukon XL 2WD, everything was perfect other than the o2 sensors on the old set up. One was stripped so I had to get another. No mods needed. But I went in with my hp tuner and turned everything I took off, off. I just need to get the money so I can dial my fuel in now. Sounds good!!