Wow! Just Wow!
I installed this on my 21 SL Today. I put the R chip in at purchase to get that extra hump but wasn't happy with the throttle response. looking at options like turbo I decided to give this a shot after reading all the reviews. I started on city 0 and worked my way up testing this thing. In the process I fell in love with my sling all over again with every press of the + button I was even more Impressed never leaving city +4. when I kicked this thing in sport mode it came alive I found what I was looking for on sport 0. anything over that it will put you in the ditch if your not careful. Don't think about it. Its WORTH EVERY PENNY. BE SAFE GETTING THE FEEL FOR IT. ITS A TOTALLY DIFFRENT MACHINE WITH THIS UPGRADE. Would buy it again.

Throttle Response Controller
The item shipped quicker than expected. Installation was simple and the response from each level was noticeable for sure. This is a no-brainer for those looking to get a little extra performance out of their machine!

Pedal commander
GREAT PRODUCT UNBELIEVABLE!!!! THANK YOU SLING MODS. I PUT IT ON SPORT+ FOR THE FIRST TRY AND OH MY WHAT A BIG DIFFERENCE BE CAREFUL LOL!!!!

Pedal Commader
This was the best Christmas present ever. I can definitely feel the change. The hesitation my sling once had is gone. I only used it i. City mode.

SlingMods Response:
Awesome! Glad to hear it. This is also one of my personal favorite mods. Enjoy!

Pedal commander
Unbelievable difference must have if you have a lag in acceleration