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My first guess would have been fuel, until your reply about seeing 110. That rules out a fuel issue for the most part. That means elecrtical. My advise is the same song; check/fix grounds. concentrate on the engine and module grounds, but check them all. Do that first, then to see if it's an ignition problem, see if you can connect a timing light so you can see it and drive. Take it out and try to get it to mess up. That should at least let you see if it's spark related.



Actually, the part about connecting the timing light seems like a GREAT idea! This should indicate whether the ignition is cutting out or not. I may do the same on my 340!



my guess is ignition as well, since every fuel issue on any car i've ever had the problem on was not so on/off instant. This problem happens like clockwork, everytime at the same time, it's hard to look at the tach while stomping it, but it's allways at the same moment. I'm also not leaning to a bad ground, since i've grounded the crap out of everything, the ecu is grounded by the mounting screws and i added a ground wire to a very good source, so that can't be the issue. I have good power to the coil, and the ecu, so that can't be the issue either. I'm starting to suspect the ecu, i'll try the orange box and see what it does and report back.

however keep the ideas comming....