Im located in Brooklyn NY ... I drive a Black 2010 Audi S4. I have a hardwired V1 and LI DUAL ... i really like the combo and it saved me plenty of times. Now all of a sudden i started to get an issue with the LI .. every time i turn it on it says ... connection is poor or bad. A good friend of mine just purchased the same exact car and i recommended him to buy the same set up as i have. Now he hasnt installed it yet.. so my question is who or where can we go to so they can install his setup and double check mine as well maybe run some tests with an actual gun... and i dont want to go back to the place where i got mine done because i feel like mine was the first LI they ever did. Thanks in advance!