Hey guys,
I just installed my new 5" exhaust on my 03 daully and wanted to let ya know how it went. I bought a 5" from RPM Outlet (Aluminized $369).The system is made by Diamond Eye. When I got it the box was in bad shape so I was a little concerned but when I went through the parts list everything checked out ok. Well the old exhaust came off with ease and the new system went on just about as easy. The fit was perfect. There was plenty of pipe so I could delete the muffler. I almost put the muffler on but my son talked me out of it... He didn't have to do much talkin...
Anyway the sound is great! At an idle it's not loud at all not alot louder then the engine. As long as the TST is turned down it isn't very loud but when you put the fuel to her she does do some barkin. It will rap pretty good if ya got your foot into it and the fuel is turned up. There isn't any drone in the cab until I get to 65 mph or so but it goes away around 70-72. I haven't had a load behind the truck but empty I really like it. I should also note that the down pipe and 1st section (about 15 or so inches) is 4" pipe. I don't remember it stating that in the add. All in all I would buy it again.
See ya,
Topper

 

I did the 5" turbo back and I love mine also. Left mine straight(couldnt imagine running a diesel I own with a muffler )...I love the fact that a third gen has a very distinctive sound. Really unlike any truck sound I have ever been around.

I am kinda surprised that your down pipe is 4 inches. My system is only four where it adapts to the exhaut elbow and imediately jumps to 5" after about
1". Have fun scarring those powerjokes and duramaxipads when you pass em - especially when their windows are down

 

Man I must be getting old!!! I had a muffler ordered the next day.. Maybe because of my12k trailer but you'll be all over the drone issue when you pull!!

 

yep 5" straight is too much for me too...I just ordered the same muffler as Shane has

 

What muffler did you guys get?

 

https://www.dieseltruckresource.com/...d.php?t=156153

 

Thanks. I have a Donaldson on mine as of last week. Took away the drone but I lost HP/TQ on the dyno. Haven't pulled yet but I hope my EGT's didn't get worse.

 

im glad you didnt order that one from dps. you guys said you had their exhaust. its ok but the muffler didnt fit for anything. it flat out wouldnt fit. it was brand new and threw it in the scrap pyle.

 

so you lost power with the straight tro 5" Donaldson????
same part number???

 

what do you mean???? I never said I had a name brand exhaust system???
all mine is homemade....except the GR stack.

 

No, I ordered the M100465 in hopes to modify it so I could get the sound I wanted but eliminate the drone. It sounds great and eliminated the drone but like I said I lost HP/TQ with it. I may take it off and modify it a bit more or just order the M090535. I just didn't know for sure if the 535 would eliminate the drone I had with the straight through Flo Pro that was on there. Either way, the mufflers are only around $57 a shot so it's not a crisis.

 

I love my 5" turbo-back Magnaflow exhaust.

 

nevermind. you guys sent me the link when before when I asked about a 5" stainless exhaust. maybe shane sent me the link from dps then. my fault. I was trying to tell you their muffler sucks basically moving on.

 

Yeah I don't know about dps's muffler??? I just ordered the no muffler kit and got the ryder/donaldson 5" muffler??

 

ditto sounds great and you can hear the turbo at idle perfectly.lol