Attention: TDR Forum Junkies 
I recently purchased and installed a Scotty III intake, and for the benefit of those considering upgrading their intakes, I decided to post a review of the product.
I've attached a photo comparing the Scotty III to the stock airbox.
Allow yourself about a half hour to not rush yourself and do it right.
First step is to remove the stock airbox. Disconnect the wiring holding the intake sensor and remove the sensor bolts using an 8mm socket. Keep the bolts as you will need them to install the sensor in the Scotty III. After removing the sensor from the stock airbox, you will want to install it into the Scotty III intake at the provided location where the turbo hose connects to the intake. Remove the stock airbox turbo intake hose connection by loosening the clamp with a flat screwdriver. Pull the hose back away from the airbox.
Next, remove the stock airbox by using a 10mm socket to remove the front bolt of the box. Gently pull the box out of the fenderwall and set it aside. You might want to place the nut back on the bolt and tighten it down in case you need it in the future.
Now you are ready to install the Scotty III. Gently work the intake into the fenderwall similar to the way the stock airbox mounted.
Re-attach the turbo hose to the intake and tighten the clamp to make a good seal. Re-attach the wire to the intake sensor (Don't forget to do this or it will throw a code). The Scotty III sits nicely without any mounting brackets, and mine hasn't moved at all since I installed it.
What can you expect from your Scotty III? Personally, I have seen better performance in mid range power, turbo comes up sooner, and a nice side benefit is a more pronounced turbo sound. The only mods I have to date are DPP 4 inch exhaust and the Scotty III, soon to go with Edge Juice and Attitude. No doubt, a better than stock intake and exhaust will be required to boost horsepower without ramming exhaust temps through the roof. The Scotty III has been super reliable, reasonably priced, and a very well-built product. It can't be beat for pulling cold air into your Cummins motor with both fender and through-the-grill air feeding the beast.
I've attached a photo comparing the Scotty III to the stock airbox.
Allow yourself about a half hour to not rush yourself and do it right.
First step is to remove the stock airbox. Disconnect the wiring holding the intake sensor and remove the sensor bolts using an 8mm socket. Keep the bolts as you will need them to install the sensor in the Scotty III. After removing the sensor from the stock airbox, you will want to install it into the Scotty III intake at the provided location where the turbo hose connects to the intake. Remove the stock airbox turbo intake hose connection by loosening the clamp with a flat screwdriver. Pull the hose back away from the airbox.
Next, remove the stock airbox by using a 10mm socket to remove the front bolt of the box. Gently pull the box out of the fenderwall and set it aside. You might want to place the nut back on the bolt and tighten it down in case you need it in the future.
Now you are ready to install the Scotty III. Gently work the intake into the fenderwall similar to the way the stock airbox mounted.
Re-attach the turbo hose to the intake and tighten the clamp to make a good seal. Re-attach the wire to the intake sensor (Don't forget to do this or it will throw a code). The Scotty III sits nicely without any mounting brackets, and mine hasn't moved at all since I installed it.
What can you expect from your Scotty III? Personally, I have seen better performance in mid range power, turbo comes up sooner, and a nice side benefit is a more pronounced turbo sound. The only mods I have to date are DPP 4 inch exhaust and the Scotty III, soon to go with Edge Juice and Attitude. No doubt, a better than stock intake and exhaust will be required to boost horsepower without ramming exhaust temps through the roof. The Scotty III has been super reliable, reasonably priced, and a very well-built product. It can't be beat for pulling cold air into your Cummins motor with both fender and through-the-grill air feeding the beast.
I even changed the height the cone for the filter end a few times until I acheived the optimum air flow over it. That was before it was released. 
