headers, hi flo cats?

[rippinitup]

whats up guys i have an 03 yukon xl with a corsa catback exhaust and airraid intake. i was planning on doing headers before i get a blackbear tune.
i just dont know much about headers,long tube headers hi flo cats exc. can someone school me and also recommend on what i should go with? thanks!

 

[Big Buttons]

Get some longtubes (I have speed engineering) get a catted y pipe if you need to pass emissions.

If you are not going to use cats you will need Justin to tune out your 2 rear O2 sensors.

 

[rippinitup]

are there any longtube headers that are a direct fit no modification needed? i see theres plenty name brands also is there any thats the "best" or they all do the same job.
i most likely will keep cats on so was thinking to go with some hi flo cats. from the best of my knowledge.

 

[Big Buttons]

If you are 4wd all longtubes will need modification. None for 2wd.

If you keep cats the y pipe will need to have the cats welded in. unless you find a kit with them already.

 

[rippinitup]

my truck is awd, what type of modifications will it need to fit? any recommend long tubes with cats?

 

[Big Buttons]

you will need to trim around your front driveshaft. Just use a big hammer.

I don't know who or if anyone makes kits with cats in there.

 

[Ridculous]

Stainless steel works has a set of long tube headers with cattes I have them in my build. After a couple of hundred miles the driver side is rubbing on the steering column...slight nudging with a mallet takes care of that. I have a stock exhaust with aftermarket tips. This set up has passed the wife and 3 year old and 18 month test!

 

[rippinitup]

can someone link me to a set of headers with cats that i will need. having trouble finding what to go with

 

[ezdaar]

http://www.speedengineeringlsx.com/...gtube-headers-y-pipe-1999-2006-25-101125-1014

But wait for the next batch as they foobar'd the collectors on this batch.

Get the big boy 1 7/8"!
Best part s not they come with collector spikes!
And No change in price! So awesome! I might swap mine out for the new model!

 

[rippinitup]

http://www.speedengineeringlsx.com/...gtube-headers-y-pipe-1999-2006-25-101125-1014

But wait for the next batch as they foobar'd the collectors on this batch.

Get the big boy 1 7/8"!
Best part s not they come with collector spikes!
And No change in price! So awesome! I might swap mine out for the new model!

thanks for the link, i see those dont have cats, id like to run cats. do you have any sound clip of yours? do you know any highflow cats thatll work with those headers?