From ea7c53f394376f28116b49eb5e1c6588b7dcfda9 Mon Sep 17 00:00:00 2001 From: Andrew Koroluk Date: Mon, 1 Feb 2021 09:44:22 -0800 Subject: [PATCH 1/3] Add notes about internal vs external MAP sensors --- wiring/Sensor_wiring.md | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/wiring/Sensor_wiring.md b/wiring/Sensor_wiring.md index e9cfa1f..d5690ec 100644 --- a/wiring/Sensor_wiring.md +++ b/wiring/Sensor_wiring.md @@ -14,4 +14,11 @@ Analog sensors provide data such as temperatures, throttle position and O2 readi ### Notes * Use of 2 wire temperature sensors is **highly** recommended. Whilst 1 wire sensors will work, they are almost always considerably less accurate. Running a dedicated ground wire back to the ECU from the sensor is also recomended. * The external MAP sensor in the above diagram is optional and may be omitted if the onboard MAP is used. Alternatively an external Baro sensor may be added in the same was as an external MAP -* A 3 wire variable TPS is required. On/Off type throttle switches are not suitable \ No newline at end of file + * There are a few benefits to using the onboard MAP sensor: + * Its calibration is already known + * Many cars already run a vacuum line to the ECU + * No need to worry about signal interference + * An external MAP can provide benefits as well: + * Some cars come with a MAP sensor already attached to the intake + * Less worry about kinking / leaking vacuum line +* A 3 wire variable TPS is required. On/Off type throttle switches are not suitable From b84b0578dccb52120eee8681168a50f915ab49ce Mon Sep 17 00:00:00 2001 From: Andrew Koroluk Date: Mon, 1 Feb 2021 09:49:37 -0800 Subject: [PATCH 2/3] Update Sensor_wiring.md --- wiring/Sensor_wiring.md | 1 + 1 file changed, 1 insertion(+) diff --git a/wiring/Sensor_wiring.md b/wiring/Sensor_wiring.md index d5690ec..78b2663 100644 --- a/wiring/Sensor_wiring.md +++ b/wiring/Sensor_wiring.md @@ -21,4 +21,5 @@ Analog sensors provide data such as temperatures, throttle position and O2 readi * An external MAP can provide benefits as well: * Some cars come with a MAP sensor already attached to the intake * Less worry about kinking / leaking vacuum line + * Slightly more accurate pressure readings * A 3 wire variable TPS is required. On/Off type throttle switches are not suitable From 40dd13192e7e3cc65c86b165f250ad2ee5a73c71 Mon Sep 17 00:00:00 2001 From: Andrew Koroluk Date: Fri, 16 Jun 2023 10:15:05 -0700 Subject: [PATCH 3/3] Update Sensor_wiring.md --- wiring/Sensor_wiring.md | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/wiring/Sensor_wiring.md b/wiring/Sensor_wiring.md index 78b2663..626c8f3 100644 --- a/wiring/Sensor_wiring.md +++ b/wiring/Sensor_wiring.md @@ -15,11 +15,11 @@ Analog sensors provide data such as temperatures, throttle position and O2 readi * Use of 2 wire temperature sensors is **highly** recommended. Whilst 1 wire sensors will work, they are almost always considerably less accurate. Running a dedicated ground wire back to the ECU from the sensor is also recomended. * The external MAP sensor in the above diagram is optional and may be omitted if the onboard MAP is used. Alternatively an external Baro sensor may be added in the same was as an external MAP * There are a few benefits to using the onboard MAP sensor: - * Its calibration is already known - * Many cars already run a vacuum line to the ECU + * Its calibration is already set up for Speeduino boards + * Some cars already run a vacuum line to the ECU * No need to worry about signal interference * An external MAP can provide benefits as well: * Some cars come with a MAP sensor already attached to the intake * Less worry about kinking / leaking vacuum line - * Slightly more accurate pressure readings + * Many existing MAP sensors are mounted directly to the intake manifold * A 3 wire variable TPS is required. On/Off type throttle switches are not suitable