I had 21st Century Muscle Cars install my Halltech Stinger-R CAI and AEM Wideband O2 sensor & gauge. They also installed most of my other parts. A great shop to deal with for your modern performance needs. They will hook you up right.
After picking up my car, I could definitely feel a seat of the pants performance improvement from the CAI; even with all the other mods.
I guess a benefit of picking up my car so early in the morning is I got a chance to play tag with a gray La Ferrari on Dallas North Tollway. I mean on a random highway in Mexico. 😉