Welcome to the Nissan Patrol forum. To post a question and to see less adds on the forum then you will have to register
first. We are an easy going friendly forum so join in the conversations and feel free to ask any questions.
Become a forum sponsor for only $20 and see no adds with faster page loading times and many extras benefits.
Might not be the issue but I thought it might help
Read post #10 in this link. A chip might help. I ran a DP chip with the same setup as you with no issues. The intake pipe on my Di was cracked too, I was making a new intake pipe for it, but now the motor is coming out, for good....