Exhaust and intake ?

[milehigh.o.]

I am considering putting on an AFE intake system and possibly a 4 inch exhaust system. I really don't want to do any other mods to the engine. So my ? is what would the benefit of doing the 4 inch exhaust, or would I be better off just doing the intake?



And if the exhaust is a way to go what is a good system out there?

 

[KYLE4]

I would run a AFE stage one intake with the proguard 7. As for exhuast your truck already has 4 inch that is why I sell the aerotubine kit it eliminates the muffler and replaces it with a resonator/ mini muffler. No drone and a nice exhuast note. The modifications won't give you alot more power just alot more efficiency you can click below in my signature to my site and see the parts I speak of.



Kyle

 

[BrianJ]

I am considering putting on an AFE intake system and possibly a 4 inch exhaust system. I really don't want to do any other mods to the engine. So my ? is what would the benefit of doing the 4 inch exhaust, or would I be better off just doing the intake?



And if the exhaust is a way to go what is a good system out there?

Starting with the 2004. 5's the stock exhaust is 4" from the turbo back. You may, however, want to consider a better flowing muffler (Donaldson, Nelson, etc. ) with the benefit being potentially lower EGT's. Probably not much help in performance or mileage.

 

[BrianJ]

Also, if your not going to do any other mods, the AFE stage 1 is probably not going to give much benifit considering the cost (upwards of $300-$400). Use the stock box with an AFE replacement filter to gain a little better flow (although, from what I have read the stock filter seems to flow pretty well). Again, I don't think most see much better performance or mileage with the drop in or stage one and no other mods, just slightly lower EGT's as I mentioned with the exhuast in my prior post.

 

[KYLE4]

Also, if your not going to do any other mods, the AFE stage 1 is probably not going to give much benifit considering the cost (upwards of $300-$400). Use the stock box with an AFE replacement filter to gain a little better flow (although, from what I have read the stock filter seems to flow pretty well). Again, I don't think most see much better performance or mileage with the drop in or stage one and no other mods, just slightly lower EGT's as I mentioned with the exhuast in my prior post.

I have a price much better than 300-400

 

[Mark Craig]

milehigh. o. ,



An engine is just and air pump, you add fuel to make it POP! So the more air you can effieicntly get in and out the cooler and more efficient it will operate. Now you won't see a "kick in the back of your head" performance change, but you will notice it. If you can monitor EGT's you'll see a lot lower temps and even though you don't plan to get a module today most folks surrender sooner or later and get one, then the benefits of more CFM of air flow will really benefit you a lot.



Ask around here about the MBRP replacement performance muffler, the members here have purchased a bunch of them. Easy install even has welded hangers that re use the stock rubber mounts, uses the ceramioc blanket and stainless steel wool packing materials that give the truck a nice deep tone, but keep it quiet when you're cruising at a constant speed. It's built form 409 stainless just like your stock pipes too so it matches up material wise.



Go for the AFE Pro Guard 7 intake system or at least a replacement filter, flow in and out is the key. Plus the PG7 stops the dirt the other filters let thru to your engine. Give us a call we have a guaranteed pricing program that ensures deal, and we are always here to help you with questions etc.



Mark @ DPPI

 

[grfraz]

milehigh. o.



Oo. I just purchased and installed one these MBRP mufflers that Mark is talking about and they sound great. My wife thinks it's a little loud, but when you're in the truck traveling down the road you don't hear it. It has a deep rumble while idling but when you get on it, boy does she sing out loud.

I also have the AFE proGaurd 7 with the torque tube and it really does feel like the engine responds better, I don't mean it adds a ton of power but you can feel the difference.



Hope this make your decision easier, and thanks Mark I love my muffler and test pipe.





no more room in my sig: also coming soon to the south east area one of Gregs DRC Race Systems. When I get it i'll take you guys for a ride.

 

[GRudy]

milehigh, you can go here https://www.turbodieselregister.com/forums/showthread.php?t=129991 to read about my experiance with my exhaust system upgrade.

I too am searching for an upgrade to the intake system but I just don't like the idea of an oiled filter. I would love to use a BHAF but just don't see where there is room for one.

 

[Mark Craig]

grfraz,



Hey great, glad it arrived and all is well, enjoy it!



Mark @ DPPI

 

[Mark Craig]

GRudy,



Take a look at the spec info on the AFE Pro Guard 7. It filters within 1/2 of 1%, which is bascially nothing of a factory paper type filter. The boys over at the Durmamx site had Testand Corp (a filter test company) do a test and the PG7 was the only non paper filter that did a good job at filtering. But the PG7 still flowing lots more air.



Mark @ DPPI

 

[GRudy]

GRudy,



Take a look at the spec info on the AFE Pro Guard 7. It filters within 1/2 of 1%, which is bascially nothing of a factory paper type filter. The boys over at the Durmamx site had Testand Corp (a filter test company) do a test and the PG7 was the only non paper filter that did a good job at filtering. But the PG7 still flowing lots more air.



Mark @ DPPI

OK, but do you have numbers as to how it compares to the BHAF? Inquireing minds want to know