Replacement cats

[Our06hoe]

So I'm going to pull the "tax refund superstar". I was planning on doing a Texas speed cam and Ls7 lifters then tune it. After floating around checking out different post on here I realized that my cats might be bad. What do you recommend for hi flow cats?

 

[Mudfrog]

Our GM's can be temperamental with high flow cats. I would not go under 400 cell count, anything less will not have enough of the precious metals to keep the CEL off. That is unless you plan on tuning it, then you could run a lower cell count.

 

[sumo]

Get some headers like American Racing and either choose the catted y section or go straight pipe. I have my rear 02 deleted

 

[Spencer_waynee]

Get some headers like American Racing and either choose the catted y section or go straight pipe. I have my rear 02 deleted

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How much does this setup run?

 

[sumo]

On my 08 I paid 1700 and some change.

 

[Countryboy07]

If you live where there isnt emissions testing... Long tubes and catless Y-pipe with a tune will wake her up.

 

[Mudfrog]

If you live where there isnt emissions testing... Long tubes and catless Y-pipe with a tune will wake her up.

It won't be long before everywhere will have emissions testing. Sadly, it will be as strict as CARB.