tune ecu question

18 mm Bull
 
18 mm Bull

Thanks Warpo!
Thought so, but wanted to be sure and twas too lazy to look it up.
Figured some of youse would know it off the top of your heads.
Gratitude!
 
18 x 1.5 if you are talking about the O2 sensor bung hole.

Thanks, Bill.
I decided to keep my PCV+AT so I reinstalled the Auto Tune O2 sensor and relocated them under the right side cover to make room for the @DEcosse keyless ignition system under my seat.
On a little side note, I also found that the PCV came with the appropriate plug if needed, so I had one all along
!