Apr 19, 2016 · I have a '03 5.3L LM7 running the Holley Dominator EFI. I'm trying to find the best setting for my MAP sensor: 09359409, in the MAP sensor settings. Any help would be great, as I don't see …

Oct 29, 2018 · MAP pressure was not even close at key on, expected around 100, read as about 50. Found bad female at the ECU connector. So in your case, could be anything in the MAP circuit, …

Jun 8, 2024 · I'm running a Holley Terminator X Stealth 4150 EFI System 550-1006. Today I had another Holley EFI 554-107 3 Bar MAP sensor fail. That makes two in less than 1,000 miles. The …

Nov 15, 2022 · Zero difference in performance. Choose whichever is suited best for your particular installation, or use the built-in MAP sensor in the Terminator X ECU. Andrew

Sep 2, 2013 · Check your Preferences (Display MAP As PSIG) in Toolbox, at top toolbar. In the Sensors ICF, the MAP sensor should first be programmed/calibrated in kPa. MAP kPa is labeled on the left …

Jan 10, 2022 · Disconnect the MAP sensor, tie the signal wire to ground, key on, and note the MAP value. Should read low MAP value if signal & ground are good.

Oct 16, 2019 · Is the blue MAP Sensor Vacuum line on the Terminator X only used if you don't use the connector on the harness to plug into a MAP Sensor on an LS3 Engine?

May 1, 2025 · I've installed a new MAP sensor, have good connectivity between the harness and sensor, a consistent 5V at both the TPS & MAP sensors. Checked for RFI issues, new spark plugs …

Feb 18, 2021 · You need a MAP sensor, whether it's the internal Terminator X ECU 1 bar MAP sensor or the external wired one. It's Speed Density EFI, naturally aspirated or forced induction. May God's …

Aug 7, 2023 · When I installed my Terminator X Max, I used a "tee" for the internal MAP sensor, and fuel pressure regulator from a single vacuum source. Members here recommended …