So I installed the fast ez efi kit on my 1983 scrambler over the past year. Wow!! I say year because none of the bugs were worked out the entire time. I have sent in the ecu 2 times in the past at my expense and the third time I had to send in the whole harness. They were supposed to send me a return label, that was 2.5 weeks ago. So I sent it in on my own accord with a nice little note telling them to take their time as I will use it to research more dependable options. When I called to let them know I had sent it their indifference was bewildering. I recommend staying far, far away from this product.
Joe Jefferson, CJ8