:o ok im putting on some longtube headers and while im under that truck i figured to put in hi flow cats, called troyer yesterday the lady there told me she had to reseach to see witch cat i need, i know i need one that is 3 inch in/out very simple but since my 06 has a 02 sensor before the cat and 1 in the cat. could i take a regular hi flow cat weld it in, then weld a bung to the pipe after the cat? Or would that throw a code. so any info would be great

 

Are you going to run true duals? Or run a 3" Y pipe and 3" single exhaust?

If true duals, get 2.5" collectors for the LTs and run part #94306, or 94106. 106 is shorter and sounds pure catless where as 306 allows more down but keeps rasp at a low minimum.

For 3", 94009 will be the same thing as 94306, and 94109 will be the same thing as 94106.

You can find all of these cats on http://www.performance-curve.com/. Great people to deal with with simple service with quality, and fast ships.

When you get your chosen cats, have them mounted where your OEM cats are then have the O2 sensor mounted after the new cats. This will keep your CEL out.

 

the headers have a 3 inch collector, i was just going to keep it like that and i will be using 1 pipe with a y pipe

 

Ok sounds good. Stick with the part #s 94109 and 94009 and you will be good.

 

ok cool they have the 02 sensors in the cat, so the 109 is shorter than the 009