What exactly does MAP sensor do?
Honda-Tech Member
Joined: Jan 2002
Posts: 977
Likes: 0
From: Tucson, AZ
Re: What exactly does MAP sensor do? (madeiniraq)
tells the ECU the negative presure(vacuum) inside the intake manifold so the ECU knows how much fuel to dump
[Modified by DX-R, 11:38 PM 10/12/2002]
[Modified by DX-R, 11:38 PM 10/12/2002]
Honda-Tech Member
Joined: Jul 2002
Posts: 2,250
Likes: 1
From: MI
Re: What exactly does MAP sensor do? (DX-R)
tells the ECU the presure inside the intake manifold so the ECU knows how much fuel to dump
um.. yeah
[Modified by madeiniraq, 7:33 AM 10/13/2002]
Honda-Tech Member
Joined: Jan 2002
Posts: 977
Likes: 0
From: Tucson, AZ
Re: What exactly does MAP sensor do? (madeiniraq)
in stock form it only reads vacuum...... you would need aftermarket program like hondata to read boost or pressure.
Trending Topics
Member
Joined: Oct 2002
Posts: 2,351
Likes: 1
From: Winnetka, Calif, USA
Re: What exactly does MAP sensor do? (1990hondaHF)
I could be wrong, but as I understand it (and being REAL exacting);
It gives a signal to the ECU based on the relationship of the manifold pressure (vacuum)and atmospheric pressure. The key point here is the atmospheric part of it. That's what would cause a different signal output if you were at high elevation, but had the same manifold pressure.
From what I've read, the stock unit will read a small amount of boost. It's around 5 pounds I believe.
It gives a signal to the ECU based on the relationship of the manifold pressure (vacuum)and atmospheric pressure. The key point here is the atmospheric part of it. That's what would cause a different signal output if you were at high elevation, but had the same manifold pressure.
From what I've read, the stock unit will read a small amount of boost. It's around 5 pounds I believe.
Honda-Tech Member
Joined: Dec 2001
Posts: 3,712
Likes: 0
From: https://t.me/pump_upp
Re: What exactly does MAP sensor do? (Wes V)
I could be wrong, but as I understand it (and being REAL exacting);
It gives a signal to the ECU based on the relationship of the manifold pressure (vacuum)and atmospheric pressure. The key point here is the atmospheric part of it. That's what would cause a different signal output if you were at high elevation, but had the same manifold pressure.
From what I've read, the stock unit will read a small amount of boost. It's around 5 pounds I believe.
It gives a signal to the ECU based on the relationship of the manifold pressure (vacuum)and atmospheric pressure. The key point here is the atmospheric part of it. That's what would cause a different signal output if you were at high elevation, but had the same manifold pressure.
From what I've read, the stock unit will read a small amount of boost. It's around 5 pounds I believe.
yes. It reads ~3 psi. Therefore, when you add FI, you need either a. Checkvalves or b. Missing link in order to trick the MAP in to thinking you're staying under 17.7psi (I think, or is it just 3; and the original 1 ATM is not counted?). It can read positive, and that's what will cause it to throw a CEL (Over ~3 psi).jB
Thread
Thread Starter
Forum
Replies
Last Post
The Weather Man
Honda Prelude
9
Aug 13, 2005 10:45 AM
1.8T_EG
Forced Induction
14
Jul 1, 2003 06:26 PM
thashadow
Honda Civic / Del Sol (1992 - 2000)
3
Jun 12, 2002 11:35 AM
