I know its more cosmetic than performance but I really dislike the looks of the stock intake tube with the silencer on the R/T model. I thought about going with a CAI but decided not to. Granted, I have no experience with them on the Challenger but I have installed many on Mustangs and Camaro's through the years and though I liked the looks I was always disapointed with the performance gains and/or lack off gains for the price. From what I've read, and I've been reading alot on this subject, the stock set up on the Challenger is pretty good. So with this in mind, I decided to install the SRT tube on my car and leave the rest of the R/T setup. It went on with no problem. It came with a new IAT sensor but it is for the SRT which of course is different. I ordered a new one for the R/T with the tube because I know with my luck I would break the old one getting it out of the old tube. And wouldn't you know it, I broke it. For once a good call on my part. I even put in a new factory filter. Again, I've spent enough money on "certain" filters through the years and could never tell a bit of difference. So in short, my car still looks factory but improved. I really like it. Just my 2 cents.