Well, it’s like this. I bought a supercharger from them and it came with a tune and ran fine. Then I bought long tube headers from them that came with a tune and it ran fine. Then I bought the cams that came with a tune and it ran like crap. Not only that, but the wiring harness for the Edelbrock SC had a short. I was promised a new one and never got it. I had to trace the short down and solder it myself. As far as the tune, it was super rich which caused the car to idle super bad. Even for a cam. I had to let it idle for OVER 10 minutes before I could back it out of the garage without dying. Once warmed up on the road it got 9 MPG. Shut it off after going to the store and it’s another 5 minutes of idling before the car will move without dying. Unless you rev it up and drop into drive. Despite repeated calls to Brenspeed, they offered no help. I was told” That’s just how it is with a supercharger and cam. Once Lito tuned the car, all it needs is 30 seconds of warm up and I can back out the garage now. The car also gets 18 MPG, and runs like a beast.