headers, hi flo cats?

[ezdaar]

simplest way to cat those headers is not to.

If you absolutely must have cats, add one big mofo on your catback.
This will simplify the install, cost and still be completely legal.


As far as sound, find any 5.3, no cat, 3" back 18" case single chamber muffler, dumped before axle under truck bed with turn down pointed towards right rear tire.

its loud at startup and quiet during idle, decent under cruise, loud during WOT.

 

[rippinitup]

simplest way to cat those headers is not to.

If you absolutely must have cats, add one big mofo on your catback.
This will simplify the install, cost and still be completely legal.


As far as sound, find any 5.3, no cat, 3" back 18" case single chamber muffler, dumped before axle under truck bed with turn down pointed towards right rear tire.

its loud at startup and quiet during idle, decent under cruise, loud during WOT.

i live in ny so i think i can pass without cats. i have a corsa cat back. how or if any, is the drone with headers and no cats while crusing? is there any negatives without running cats?

 

[ezdaar]

Most drone is caused by exhaust being dumped under the body, causing reverberations.
With your corsa you will get alil but not much, it's it's annoying have a small bullet style muffler added. It will hush up the drone and cause no back pressure increase.

The only side effect to no cats is the check engine light will come on and complain about no cats. Have the rear o2's turned off via a tune.
You will gain power. How much depends on how clogged your cats currently are.

 

[bottomline2000]

I have dynatech lt with high flow cats (not installed yet!). they are not the cheap, but they are quality no doubt. this guy has the same setup on his Escalade and it seems to fit fine.


http://www.tahoeyukonforum.com/forum/showthread.php?t=38738

 

[ccapehartusarmyINF.(ret)]

keep in mind long tubes with no cats even with astock muffler is rediculously loud
i did long tube pace setters and the y without headers into a super 10 blowmaster muffler with dual outs to the back and holy crap is it loud way louder then i excpected
if yer planning on going for a blowmaster muffler id recomend not gong balls to wall and get the super 10 id just stick to the super 40 thats prolly plenty loud with long tubes and now cats
im even concerned to the point when cop is around i kinda lay off the gas

 

[ezdaar]

Sissy

 

[ccapehartusarmyINF.(ret)]

shut up dude i like a extremely loud exhaust as much as the next guy id jsut prefer attract as little police attention as possible put it this way i have current unresolved issues with my drivers liscence

 

[ezdaar]

Lol. Simmer down bud. It's all good.

 

[ccapehartusarmyINF.(ret)]

yeah buddy
man i know its been said and beet to death but never get behind the wheel of that tahoe or yukon drunk not even a sippy sip or an Odouls call some anyone a cab the bus hell walk
all those are way better then a DUI they are not ****** around no more with DUIs they put the screws to yah and connect jumper cables to yer nuts
and any forum members living here in the east valley here in arizona and to drunk to drive and absolutely cant find a ride heres my number 4806210130 but man im telling you better have exhuasted all possible options and oh boy yer gettin an earful

 

[livingez_123]

if it's just a driver I wouldn't go with the 1 7/8" The 1 3/4" will keep the exhaust flow up and help with low-end torque. Also, Kook's makes a nice set of headers and a catted Y pipe, but they are not cheap.

http://www.kooksheaders.com/1999-2013-gm-1500-series-truck-1-3-4-x-3-header.html

http://www.kooksheaders.com/2001-2006-gm-1500-series-truck-6-0-3-x-oem-catted-connection-pipe.html