2000CL713 Posted October 13, 2017 Share Posted October 13, 2017 Looking for best flowing (stock size) mufflers for my 2000 CL. What does everyone recommend? Not looking to spend $500 on each muffler either. Quote Link to comment https://www.bigmacktrucks.com/topic/51380-mufflers/ Share on other sites More sharing options...
MACKS Posted October 13, 2017 Share Posted October 13, 2017 Look on line, like Iowa 80 has free flow mufflers the chrome or stainless are pricy but the plain Janes are pretty reasonable .. Quote Link to comment https://www.bigmacktrucks.com/topic/51380-mufflers/#findComment-382410 Share on other sites More sharing options...
Mackpro Posted October 14, 2017 Share Posted October 14, 2017 I got a part number for a Donaldson or walker ( I can't remember) that is straight through and not loud. I'll be by the shop Monday and find it Quote Link to comment https://www.bigmacktrucks.com/topic/51380-mufflers/#findComment-382425 Share on other sites More sharing options...
BGarofalo Posted October 14, 2017 Share Posted October 14, 2017 I used the Donaldson mufflers on my CL. $80 bucks a piece right from the dealer. Louder than stock but by no means too loud. I would have to get the parts number from the shop. Quote Link to comment https://www.bigmacktrucks.com/topic/51380-mufflers/#findComment-382430 Share on other sites More sharing options...
2000CL713 Posted October 14, 2017 Author Share Posted October 14, 2017 (edited) Yes please get me the part numbers when you guys can. Thanks. I replaced my whole exhaust system like 9 years ago. I will need to be replaced here soon so want to start buying what I need. Cost me $1200 bucks 9 years ago (i have dual exhaust) from turbo to tip piping and all new camps and hardwear. I don't mind little louder if I gain performance from it. Wish i could straight pipe it but I can't bc of my cab shield is full size and not the narrow one which sucks but I'll just have to work around it. I was just looking at the Pittsburgh power mufflers. Any Good? Edited October 14, 2017 by 2000CL713 Quote Link to comment https://www.bigmacktrucks.com/topic/51380-mufflers/#findComment-382432 Share on other sites More sharing options...
Mackpro Posted October 16, 2017 Share Posted October 16, 2017 Walker part # M100463 is what we had put on a few truck. I think it was $120 Quote Link to comment https://www.bigmacktrucks.com/topic/51380-mufflers/#findComment-382648 Share on other sites More sharing options...
2000CL713 Posted October 16, 2017 Author Share Posted October 16, 2017 thanks for the info. how often do you think they should be changed? my are almost/just about 9 years old. not rusted or anything on the outside. not sure of the condition on the inside tho. Quote Link to comment https://www.bigmacktrucks.com/topic/51380-mufflers/#findComment-382673 Share on other sites More sharing options...
MHfred Posted October 16, 2017 Share Posted October 16, 2017 I would not worry about the condition of the muffler on the inside as long as nothing appears wrong with the way the truck runs. My replacement muffler for my MH came from the Mack dealer and I was surprised that it was straight through but it is not loud. I forget what it cost. Quote Link to comment https://www.bigmacktrucks.com/topic/51380-mufflers/#findComment-382674 Share on other sites More sharing options...
Hobert62 Posted October 18, 2017 Share Posted October 18, 2017 If they aren't leaking I wouldn't worry about them. Unless you are changing pipes upstream or downstream of the muffler. Then change it all. Quote Link to comment https://www.bigmacktrucks.com/topic/51380-mufflers/#findComment-382871 Share on other sites More sharing options...
2000CL713 Posted October 18, 2017 Author Share Posted October 18, 2017 I will need to replace the y pipe under the cab soon. I usully replace everything when I do that. Wish I knew what mufflers I installed last time but it's been 10 years almost lol 1 Quote Link to comment https://www.bigmacktrucks.com/topic/51380-mufflers/#findComment-382879 Share on other sites More sharing options...
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