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Turbo, I'm running a PCIII, so can't speak much about the map you need, but I'm having some of the same problems with my ride -- coughing under certain situations. Something I've been told in other threads that you might check. Since you are running true duals now, they say the rear cylinder will tend to run leaner than the front, so you need to richen the rear up more. I did that on my PCIII map and it seemed to help somewhat, but I haven't had a chance to keep trying. Anyway, for what it's worth. Good luck.
GMR does have a quite a few maps on their website but I get an corrupt error message when trying to open any of them. My hope was I could use one of them.
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