Need to replace mufflers

[havin-fun]

Since the mufflers have holes in them, its time to replace them what's the best exhaust system from the cat back. the truck is stock.

 

[sytydvr]

straight pipe sounds awesome or u can get the atr exhaust if u want muffler

 

[havin-fun]

If I run a high flowing exhaust will it cause problems with a stock wastegate

 

[SyTyJedi]

If I run a high flowing exhaust will it cause problems with a stock wastegate

No. Messing with or deleting the cat WILL in some trucks. It didn't in mine, but it does with most.

The ATR is the nicest cat back IMO. Straight pipe sounds too much like every other chevy truck to me :roll:

 

[sytydvr]

leave your cat u will most likely overboost if you have the stock wastegate

 

[InvisiBill]

Yeah, people commonly overboost with the stock wastegate when they remove the cat. I didn't even realize it, but one of the previous owners of 1456 replaced the mufflers with straight pipe. Even when they rusted through and I removed basically all of the exhaust behind the cat, it still doesn't overboost. The cat seems to be the big thing that affects overboost.

 

[havin-fun]

If I go with a ATR cat back exhaust I need to use their Hi flow cat any problem with the waste gate and a hi-flow cat or should I use a reducer

 

[sytydvr]

the atr exhaust bolts up to your stock cat no need to purchase reducers it already comes with it.

 

[kwick6]

http://syty.net/phpBB2/viewtopic.php?t=35228