If I straight pipe my truck will it void my warranty? Maybe someone can recommend a muffler that has a throaty sound .

 

the only warranty it might void would be the exhaust components i would think..... there are a lot of different mufflers out there. nelsons and donaldsons have good selection. if you want loud but not as straight pipe loud you can get a 28" nelson or donaldson or if you want not too much louder than stock but a nice deep throaty rumble you can get a 51" nelson or donaldson.... these are just a few...