[olopezm]

Hmm... Yes it has a diesel like sound and I was kinda aware about it was related to the intake only I didn't know which part, but there is another sound which happens only when the van is in R,D,1 or 2; maybe i'm using the wrong word to describe the sound since english is not my main language. I will record and upload it tomorrow so you can listen to it.

Do I have to replace the plenum to get rid of the diesel sound or is it enough to use some high temp sealant to fix in place the inner baffle in the manifold?.

Thanks again for your help, I really appreciate it.