Georgia SeaDawg
New Member
For those of you who have changed out your OEM mercruiser manifolds, risers, and elbows to the HI-TEK marine manifolds, was it worth it? I'm not really looking for perfomance improvement, however I would not turn down better MPG! I'm looking for reliability and not having to change these out every 3-5 years. And for those of you who have 8.1L mercruisers, how difficult was the change out. I understand I will need to make a slight change for my oil filter.