Just to clear my name here guys. This is the first problem I have heard of since I started doing these. I have done at least 50 and have sold all of them on this site. No one has been disappointed. I had read before that the tps from the Mustang would give the wrong signal, which would cause idle problems, so I started not sending them recently. From now on, I will send the tps along with it. I have also read that these are a great mod for FI and 3L contours. I had one on my SVT, with ported manifolds and heads and showed a 10th better quarter and about 3-4 hp on a G-tech. I know the g-tech isn't the most accurate, but if you get a good baseline with the same meter on the same road and same conditions, it can tell a lot. Anyway, I want people to be satisfied here so I am willing to work with you guys. Thanks.