I have a 2006 dodge  2500 4x4 mega cab with a cummins.I have a superchips tuner and i just got a edge attitude {not installed yet}any know which is better or if they can be used together ?  

they cant be used together for there is to much timing no way around it you would have to get a smarty it can run fuel and timing or just fuel the edge is way better than the superchips cant run the edge on high like the other though to much heat you ll see with the out look moniter you will need a good fuel pump the intake one will not no where be enough and if its a auto get a good tc and vb or you will replace the trans aleast cut the cat and muffler off the exhuast if you runninng factory if you try to run both superchips and edge it will cuase denotation this you dont want have fun  

Hey whats the deal with this smoke switch and where can you get it and what about a high idle kit for a 99 cummins, any help would be great!  

Use the Edge, they do really well on timing.  If you ever decide to stack chips however, get a smarty.  They're specifically for dodge and dodge only so yeah, they're the best tuner on the market.  In fact Marco just helped Eric Brown tune is truck to drop 1129hp on fuel alone, so yeah.  It's a darn good tuner.

But Scott is right, just with that edge alone, if you do not run aftermarket parts for your tranny (auto), you will definitely start sliping and your line pressure in the stock valve body won't be suffice.  Make sure you get those two at least, just those two alone will enable your tranny to withstand up to 550 ponies or so.  Also look into a deep tranny pan also.  

and one more thing, the stock flex plate has actually been known to break on our dodges (yours is an 06 and mine is an 07 so they're the same)  look into that too.  BD sells the best flex plates, but for your tranny Goerend is the way to go.  

PM ME and I will hook you up with a guy if you need some performance parts.

John