I know this is an old thread. I had to deal with Howell several years ago. their Jeep efi kit was based off a GM 2.8 V6. The thing out of the box ran rich and was a complete disaster. After speaking with Howell they offered to sell a me a new chip to correct the problem. There was a very long pause and silence on the phone when I called them out for not selling the kit with the proper tune in the first place.