gauges came in, need help
Senior User
Joined: Dec 2011
Posts: 200
Likes: 0
From: Salem, IN
Don't tap the MAP line. It is not as accurate as if you tap into the intake Y.
Here is where I put mine on the intake Y. It is the brass fitting on the upper portion of the intake Y.
Where the schrader vavle is, is where you want to get your fuel PSI from. However, you will not be able to just screw it into where the schrader valve was. You will need a brass nipple and a brass 90* elbow to install the sensor there. That is because of the engine pull mount located right next to the schrader valve.
Here is where I put mine on the intake Y. It is the brass fitting on the upper portion of the intake Y.
Where the schrader vavle is, is where you want to get your fuel PSI from. However, you will not be able to just screw it into where the schrader valve was. You will need a brass nipple and a brass 90* elbow to install the sensor there. That is because of the engine pull mount located right next to the schrader valve.
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Post Fiend
Joined: Dec 2009
Posts: 15,505
Likes: 18
From: Livoina,La
sure it is pressure in a system is pressure it doesn't matter you get the psi reading from. The gauge isn't reading volume It's reading psi.
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Senior User
Joined: Dec 2011
Posts: 200
Likes: 0
From: Salem, IN
I saw a difference in the MAP line and the intake Y.
Post Fiend
Joined: Dec 2010
Posts: 10,121
Likes: 3
From: Orrville, Ohio
I'm not seeing how there could be a difference in pressure then. The air pressure in the top of your tires is the same as the air pressure in the bottom isn't it? Same principle applies unless you have a leak in that line someplace (maybe in the MAP sensor itself?).