Continuing on my rebuild with new muffler and cat.
I have a loud drone hum all the time. It changes very little with RPM. Sometimes worse when decelerating through 2000RpM.
Anyone out there know how to stop this? I checked other sites on Drone noise and it gets pretty complicated and expensive to start matching pipe sizes to wavelength estimates.
Any, the van is almost done and this is killing all the work and money spent on the restoration.
MT