Hey guys,
I have two Young performance Marine 598's EFI. I have the (MSD)distributors and I found rust under the cap along with broken wire runing to the module, needless to say it would not fire. After sitting all winter, So I replaced the module and cleaned it all up, in both distributors. I purchased the modules from auto zone, are these good modules for a marine application???

After setting the base timing to 8 degrees, It sounds great until it gets to 2800-3000 rpms, then is acts like it retards the timing, bogs down real bad. Almost as if its a "limp home mode"

Is there anything that would cause this ???

Thanks in advance!