Quote Originally Posted by Fast355 View Post
You can get adapters for 02 sensors for some ehaust manifold/riser designs. Plan to use them when my L31 from my Express ends up in my boat with the 0411 running it.
I have seen those, don't remember them being around when I did mine years ago.

My new boat has a TBI 350 in it stock, will do 55 MPH, and pulls anything I want behind it. I am leaving it alone...LOL