1 bar, 2 bar, and 3 bar MAP sensor?
Thread Starter
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Re: 1 bar, 2 bar, and 3 bar MAP sensor? (tntcorvette)
You understand correctly. A "bar" is an atmosphere. A one bar MAP senses manifold "pressure" from between zero and roughly, 15 psi, which is atmospheric pressure (14.7 at sea level). It is the common naturally asperated MAP. The "2 bar" will measure to roughly 15 pounds boost (two atmospheres) and the "3 bar" to about 30 psi boost. The lower numbers of "bar" increases the resolution of the read out. Don't use what you don't need.
Safety Car
Joined: Dec 1999
Posts: 4,691
Likes: 1
From: Framingham MA
Re: 1 bar, 2 bar, and 3 bar MAP sensor? (tntcorvette)
The GM one bar sensor goes from 0 to ~14.5" vacuum (0 to -1bar). GM's 2 bar sensor measures 14.5" vacuum to 14.5 psi of boost (1 bar to -1 bar), GM 3 bar Sensor measures 14.5" vacuum to 29.0 psi of boost (2 bar to -1 bar)
Drifting
Joined: Feb 1999
Posts: 1,772
Likes: 33
From: Bradenton Florida
Re: 1 bar, 2 bar, and 3 bar MAP sensor? (dgoodhue)
Karl,
Shalin(blownc4) was one of the few programmers out there to program a GM ecm with the factory map sensor. He programmed his SC'd 93vette and I believe he did a couple 7730's as well.
He sold his 93 and now is into supra's . You may be able to drop him a email and see if he can help you out.
It was blownc4@yahoo.com
Dennis
Shalin(blownc4) was one of the few programmers out there to program a GM ecm with the factory map sensor. He programmed his SC'd 93vette and I believe he did a couple 7730's as well.
He sold his 93 and now is into supra's . You may be able to drop him a email and see if he can help you out.
It was blownc4@yahoo.com
Dennis
