What did you do to your 21+ T1XX today?

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olyelr

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Fireman591

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Well I finally pulled the trigger on my 5.3 2021 Tahoe for a muffler upgrade. I cut out the stock BBQ grill sized muffler and welded in a 18 inch MagnaFlow Performance Muffler model 12259. I left the flapper and resonator. The sound is just a tad louder but the sound is much deeper than the stock muffler. Overall I am happy with the upgrade. The muffler was $141 on Amazon and I paid $100 for the install.
 

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jd08

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Yea, its filthy lol

I ran those tires on my truck for 60k miles…great tires
Yes to me it is dirty!!

I had these tires on a previous truck and really liked them. But they were a passenger SL rated so these I got the LT version that is load D. More tread depth with the LT version.
 

KMeloney

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