Hello, this is a new setup and the first time I have tuned a turbo or with E85. Setup is 1994 Mustang with 04 LQ9, stock block with 228/230 cam and springs, ls1 intake, decaped flex fuel injectors (flow tested) 78/75 cast turbo, E85, non intercooled, SD tune. I am fighting knock at idle, on decel and accel. I am only running 9 to 13 deg advance under boost and I am still getting KR with only 4psi of boost. I started with 13 of timing and backed if off where I was getting KR. I made a change to the burst knock setting but it didn't seem to help. I don't believe the exhaust is hitting anything to cause the KR. It will knock in park in the driveway.
In the scan attached I was using the spark control to test 11, 13, 15, 16 degrees of advance and the car really picked up power with timing but the knock has me concerned.
I am targeting .78 Lambda under boost and I am pretty close to that target. I am also having trouble getting PE to kick in before boost for some reason but I don't think that should affect knock under boost.
I would love to get your opinions to get this resolved.
Thanks in advance for any suggestions.