kritter

Ok I have a 2003 quad cab..I need something simple as a new exhaust. Now everyone keeps telling me go 4 inch.... OK... started out with Flomaster 4 inch cat back kit..... not a happening thing.mounts nowhere close to being correct.... way too long to fit under the truck.....

Soooo.took it back got the Magnaflow 4 inch turbo back kit..... all stainless whoohooo.... everythings good to go....Right?..... anyhow got the old exhaust off...go to put the new one on and .... OK how does one expect to connect a 4 inch pipe to a 3 inch turbo outlet?...... pulled it all apart , back in the box...whats left of old exhaust back on.( I need to drive to work tonight )

So the new Big question is.....

which turbo or even catback system should I be using??

I want something thats going to be easy to install... use the factory hangers. ( sorry but i don't see spending all that money for something i have to bring back home just to hack & weld on to make fit ) and maybe some proformance gains?

Oh and is going to fit.... it's a 3 inch outlet for the turbo.... so I'm stuck with a 3 inch pipe right?

thanks....

madhat

Did you order it for your specific truck? They should know that you go from a 3 to 4...

Riflemanusmc

Put a 5 inch on my 04. That was back in 05. BD kit. Cost me over $900.00 then. Alot cheaper now, even the SS. Had to use the factory down pipe to fire wall back. And BTW... 03/04's had a cat?

DmaxEter

You must not be getting the setup for your specific truck. I ordered the cheapest piece of junk looking 5" off Ebay and it fit perfect! It even had enough adaptors to go from 3" up to 5" if need be.

kritter

madhat : no the ones I've been getting have been from Summit both listed as a "direct fit"
Riflemanusmc : yes it's an 03 with a cat.... supprised me too...I'm thinking maybe since it's an early 03 they might have used up the "leftover" 02 parts?
DmaxEter: both kits sat they should fit an 02 and up....so who knows.

HotRodK

Were the California trucks outfitted with a cat? My '04 doesnt have one and I have yet to see another that does before '04.5.. Dunno about that part.
If you go to Dodge and buy the turbo manifold for the '05 5.9 it will connect right to your turbo and the systems (turbo back '05+) will bolt to that. Its about $95 for the elbow. Its the way to go.

DmaxEter

The kit I got was specific to 03-05 trucks. 02s were different I guess?

madhat

I do not think that 03's or early 04's have a cat, but they do have a resonator that is in the same area as the cat's on the later models. The 03- early 04's had a 3.5 inch from the turbo, I believe. Someone check me on that.

I do not know if the Calif models had a cat in those years.

Measure your OEM down pipe, then call the company that you are buying the exhaust from, and tell them what size it is.

surfram

This is the proper turbo back magnaflow kit for a 2003-2004:
http://www.magnaflow.com/02product/d...rtnumber=17974
This is the cat back system: http://www.magnaflow.com/02product/d...rtnumber=17958

I have the 17974 turbo-back kit on my truck. The straight pipe section that connects the down pipe to the muffler needs to cut to length on a short bed quad cab or regular cab long bed. 2003-2004 trucks have a 3.5" turbo outlet and require a different down pipe then 2004.5+ trucks that have a 4" turbo outlet.

Summit Racing:

http://www.summitracing.com/parts/MPE-17974/
http://www.summitracing.com/parts/MPE-17958/

kritter

""This is the proper turbo back magnaflow kit for a 2003-2004:
http://www.magnaflow.com/02product/d...rtnumber=17974
This is the cat back system: http://www.magnaflow.com/02product/d...rtnumber=17958

I have the 17974 turbo-back kit on my truck. The straight pipe section that connects the down pipe to the muffler needs to cut to length on a short bed quad cab or regular cab long bed. 2003-2004 trucks have a 3.5" turbo outlet and require a different down pipe then 2004.5+ trucks that have a 4" turbo outlet.""

Ok....so now heres the problem...... the kit i have IS #17974.... however... the down pipe is still 4 inch.... and the turbo outlet is still three inch.... am i missing an adapter or something? or is there something different about my truck that it's got the smaller outlet on the turbo?
i'm lost on this.....

EDIT.....just called magnaflow,,, seems it's a split year 1997-2002 fits my truck which is a 2003....? confused I am.... anyhow it's part # 17924

surfram

What is the horsepower/torque rating on the sticker on the side of your valve cover? My truck is a 305hp/555tq early 2004.

Raspy

kritter,

The '03, '04 trucks have a 3.5 inch turbo outlet. The 04.5 has a 4 inch outlet.

Get a 4" elbow for a 04.5 or later truck and you should be good to go. Or get a downpipe for an '03. If you want the least restriction and might get an exhaust brake later, get the elbow now and be done with it.

Jim O

I put the Jacobs ex brake on when my truck was new and the outlet on the brake is 3.5" so it would be very expensive to replace the brake to get a 4"
I was told but I don't know for sure that the turbo end of the O4.5 and up elbow will not mate with the O3 turbo (has anyone tried this). My exhaust system is getting pretty ratty and I am also looking at Magnaflo.
Jim O

Raspy

If you already have the ex brake and the 3.5 inch elbow just get the 3.5 inch downpipe that is for the '03 and '04 models It's a 4 inch pipe with a 3.5 inch connector at the turbo. But I believe the 04.5 and beyond 4" elbow fits the earlier model trucks. I'd rather have the 4" elbow and wish I would have got it when I put the new exhaust. Either way.

Jim O

No it is not a 4"pipe with a 3.5" connector. It is a 3.5" pipe with a 3.5" connector. I have seen an aftermarket exhaust system with a 4" pipe but I can't remember what brand. I also wonder how much benefit I will get with a 3.5" connector restricting the flow into a 4" exhaust system. If you go on the MagnaFlow site in the installation info for the XL15974 exhaust system going by the drawing you can't tell if they even use the elbow ( they state "clamp the downpipe to the turbo") and if they really mean that where, is the exhaust brake.
Jim O