they are homemade by stangerang. they work for his car so there is no reason they wouldnt work for yours. even if they break down the road you know how to get in touch with him. I can tell you right now I went with Dallas Mustang and went through 2 differnt sets because and that was at $70 a pop. Now I had mine eliminated through the computer chip and that to me is the only 100% full proof way but that will run you close to if not over $300 for a custom chip.