Originally posted by freakingbori617Hello guys so Ive been trying to fix this issue for months I had posted in ms forums post, http://www.msextra.com/forums/viewtopic.php?f=4&t=43411&p=312602#p312602. And I have had no luck. Dave built my unit and checks out. I also sent it to symtech to verify I didnt cause any damage and they also added flyback decoupling mod. I made my harness from scratch and could not of came out any better. Please guys I need your help or im going to sell or part my car out. This is a data log of today http://www.2shared.com/file/0cQiBrPw/symtec_new_drive.html This is my msq. FIle http://www.2shared.com/file/zKsDKF-4/420a_1051.htmlIs your MegaSquirt enclosure touching chassis ground? If so, try isolating it.