I've placed my DIY write-up on the K5OS CANBUS Control Module Install on Google Docs.
If you view the Google Document, best to view in Google Docs (instead of the preview). When looking at the preview, click on the "Pop-Out" Icon in the upper right. This will open it in Google Docs, which will show the document correctly.
Alternatively, I've included a PDF, but the file is quite large (77 MB)!
I want 1! But mine is a lease and dealers around here are stupid. I have no doubt I would get charged if I did this... Getting my windows tinted this weekend
Oh trust me, there are many things you can do to a leased vehicle, as long as everything is installed properly and with taste, you shouldn't have any issue when it's time to turn the vehicle back in. Many of the products you will remove and some you can even leave remaining. I leased my Optima for 2 1/2 years which is why remember all of this from my own experience.
It would be easy to remove really with little trace afterwords, just snip some wires close to where it was tapped, rewrap with electrical tape, and it will look stock.
Not really a HUGE car guy. Never done that before, last thing I want to do is go cutting things. It would be my luck I'd mess something up and have to get a dealer involved anyways. I could always ask the dealer if they could install for me and confirm it's fine for warranty. I've heard of some places doing things like that... It's just all the places around here are pretty much inept.
2014 Kia Cadenza, Metallic Bronze and Beige, Lux Package
-Full Korean K re-badge
-Ultra Racing Performance front strut tower bar
-Racing sport pedals