It seemed to jump into the red before the needle fell off

 

I have the same problem Grimace. Mine has been falling off as well. I have to really clean it and put a lot of pressure to the window and screw it in to provide the suction.

When you go out to the track Grimace let me know. I would like to make a few passes myself. I need to find out if my Gtech is telling me the truth. The best I have gotten so far is 13.2 at 107MPH.

Jay

 

October 29th there are a few of us going to Thunder Velley. Here is a link to the thread at FTW
October test and tune