Do any of you who have the Magnaflow 5" mufflers know if all their mufflers neck down to 4" or just some?

 

I just purchased some 5inch tubing and welded up a system. It sounds better then the 4. I dont mind posting pics. I just painted it black so I would like to show it off a lil

 

Thanx 53, guess that has to do with loss of backpressure. I was considering one. But I like my mbrp 4".

 

I had silverline 5" staight piped on my 03 and it was much deeper than the stock straight piped. It wasnt really louder tho, atleast i didnt think so. Just deeper. and it did seem like i lost a little bottom end when i straight piped the 5"

 

I have a 5 inch diamond eye. Seems with the big tires at highway speeds minus the kitty with a muffler I don't get a bad drone, but that is because my RPMs are down. I recently put the stock tires back on to pull from Alaska and had a moderate drone at highway speeds due to the increased RPM. I think I read somewhere in here that unless you are running 850 HP you really don't need the 5 inch.... but then again, it does look good.

 

All the 5" systems I have seen have a 4" downpipe and then goes to 5" under the cab??? maybe the turbo's egh output is only 4" ???? anyone have a 5" downpipe??

 

Mine has a 5 inch downpipe into the 5 inch exhaust.... It was alot of fun getting that to mate up with the Jacobs exhaust brake. Won't ever do that again...

 

it was worth $97 to have it installed and welded

brett

 

Holy crap... Would have been worth every penny... Spent most of the day with heat, a spreader, ruining a $30 gasket on the exhaust brake..

 

you dont need that little gasket. i found out the hard way after ordering it when i messed up the supplied one...to the tune of $50.

i finally had mine finished by DC and the installer told me a jake rep said they were not really needed. i think it took them about an hour from start to finish. they were the cheapest by a long shot. the other guys wanted anywhere from 200-450...i told them that they were crazy

brett

 

And now I found out I don't need that stupid gasket.... What a waste, spent about 2 hours driving from Dodge to Dodge to the cummins/onan store to find it....