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Was wondering what you fellows thought would be a better way to spend money on first, a SMARTY Jr or a nice 5” stainless exhaust system, should I wait until I have all the money to do them both together, or is the SMARTY fine with stock exhaust.

Thank you all for the advice

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Goober

How much power do you want to make.

Might want to look at getting supporting mods first. Intake, gauges, 5in exhaust (600hp+) but you will have lots of drone in the cab with a 5in. Tranny upgrades.

With a tuner you have to play it safe since anything over a 70hp tune is going to destroy your tranny if you like to get on the gas a lot

Luvnacumns

spend the money at a muffler shop and get a good flowing muffler, rokktech or donaldson... Should be able to do that for $50 or so and then get the smarty!!!

WYODSL

i say smarty jr first then just cut your muffler out and put a straight pipe in place of it. This way you will still have cat, but it will sound awesome not too loud not too quiet, and you'll have a programmer for more power and code reading. just my .02, if i could do it over again thats the order i would have went.

HOV

Smarty JR.

rip 112

1 Smarty
2 Muffler or vise versa. You can do a 5inch later as its not really "needed".

nvr-enuf

From your signature, you have a 2004.5 which as factory 4" exhaust which guys of older trucks drewl over. How much more "free flow" do you need. I agree, throw on an aftermarket muffler for $50 to $65 and be done.

To give you some perspective, the on highway CUMMINs engine, I believe 11 liters has a 4" exhaust elbow in their system.

The smarty will live'n up your truck and may give you some mpg increase.

cgmorgan06

Do the 04.5's have a full 4" exhaust system? I didnt think the 4" came out until 06?

ptgarcia

Smarty Jr.

Don't bother with a 5" exhaust.

rip 112

The 04.5 600 series were the start of the full 4" exhaust.

rockcrawler304

+1
5" exhaust is a waste unless you are after BIG power numbers. And if you're only looking at a Jr. I would say you are notgoing for big numbers, just some xtra.

jsantos58

Does any one know if there is any problem running a Smarty with a Mileage Max by PowerEdge???

BEARHUNTER

Go for the jr first

bighornram

Try posting in a thread related to your topic and if you can't find one start a new one. As for your question I don't know.... probably could... But why would you want to?