6.0 cats

[cfitz]

Considering my cats *might* be failing, and the OE ones are $$$$ and I'm not a huge fan of walker exhaust, anyone have an input of magnaflow direct fit? Are they worth it? Noticeable difference? By the way these are for my 04 2500 HD 6.0 and I'm planning on a muffler back from Corsa or MF in the near future. And I have an HP tuners license I'm planning on using after cats are installed, if that's the problem of course....Thanks!

[Chris]

As long as you're not in Cali the magnaflow will work nicely

 

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[Stl_Denali]

Considering my cats *might* be failing, and the OE ones are $$$$ and I'm not a huge fan of walker exhaust, anyone have an input of magnaflow direct fit? Are they worth it? Noticeable difference? By the way these are for my 04 2500 HD 6.0 and I'm planning on a muffler back from Corsa or MF in the near future. And I have an HP tuners license I'm planning on using after cats are installed, if that's the problem of course....Thanks!

 

Did you install these as of yet? I just ordered the same for my 05 Yukon Denali.

[cfitz]

Did you install these as of yet? I just ordered the same for my 05 Yukon Denali.

No not yet, haven't even ordered them. If you've installed them, please post up! I was having an issue with the CEL flashing on the highway. Turns out the MAF was bad, causing rich conditions on both banks (PO175/172). Replaced it, performed the crank re-learn procedure and so far so good after a week....

[Chris]

At least one problem is solved

[Stl_Denali]

I just got them today so i will be putting them on this weekend or Monday. I took my truck in to a friend that determined Bank 2 was the culprit. O2 sensors look fine and my MAF is fairly new. Hopefully this will do the trick. Just hop those bolts are to stubborn..