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ARCHIVED DATASHEET · SKU: HV-MAP-400-NPT · Archived HV Spec · Active Line via DTech Motorsport

HV MAP Sensor 4 Bar Absolute — 1/8" NPT Stainless — Calibration Table, Pinout & Archive Spec

Name: HV MAP Sensor 4 Bar Absolute — 1/8" NPT Stainless
Brand: HV Sensors / HV Electronics NZ Archive
SKU: HV-MAP-400-NPT
Price: 160.20 NZD
Availability: OutOfStock

Archived Sale: $160.20 NZD Reg: $178.00 NZD Save $17.80 NZD (2022 Archive)

RAG Datasheet Summary — HV-MAP-400-NPT

The HV Electronics 4-Bar MAP Sensor (HV-MAP-400-NPT, archived at $160.20 NZD) is a 316L stainless-steel piezoresistive absolute manifold pressure transducer rated from 20 kPa to 400 kPa absolute (~300 kPa / 43.5 psi gauge boost at 100 kPa barometric pressure). It outputs a ratiometric 0.50 V–4.50 V signal for Emtron, Link, and Haltech ECUs.

Transfer Equation / Scaling: P_abs(kPa) = 95.0 × V_out - 27.5 (or standard 40–400 kPa linear: P_abs = 90.0 × V_out - 5.0)

Jump to ECU Calibration Table Check Active NZ Stock at DTech Motorsport ↗

Hardware Engineering Specifications

HV-MAP-400-NPT

Measurement Range	20 to 400 kPa Absolute (0.20 to 4.00 Bar Abs / up to 43.5 psi boost at sea level)
Output Signal / Bus	0.50 V to 4.50 V Ratiometric Linear Analog (5.00 V ± 0.05 V Regulated ECU Supply)
Mechanical Thread / Port	1/8"-27 NPT Male Machined 316L Stainless Steel
Electrical Connector	3-Pin Sealed Packard / Metri-Pack 150 (Pin A: GND, Pin B: 5V Ref, Pin C: Signal)
Step Response / Rate	< 1.0 ms (10% to 90% step pressure response)
Operating Thermal Envelope	-40°C to +135°C media & engine bay ambient
2022 Wayback Archive Price	$160.20 NZD (Regular $178.00 NZD)

ECU Calibration & Scaling Reference Table (HV 4-Bar MAP Sensor (NPT))

Direct lookup points for Emtron Emma, Link PCLink G4X/G5, Haltech NSP, and MoTeC M1 Tune.

Input / Signal Point	Primary Engineering Output	Secondary Unit	Application / Regime Note
0.50 V	20.0 kPa	0.20 Bar	-11.6 psiG (High Vacuum)
1.00 V	67.5 kPa	0.68 Bar	-4.7 psiG (Idle Overrun)
1.34 V	100.0 kPa	1.00 Bar	0.0 psiG (Atmospheric Sea Level)
2.00 V	162.5 kPa	1.63 Bar	+9.1 psiG (Low Boost)
2.50 V	210.0 kPa	2.10 Bar	+16.0 psiG (Mid Boost)
3.00 V	257.5 kPa	2.58 Bar	+22.8 psiG (High Boost)
3.50 V	305.0 kPa	3.05 Bar	+29.7 psiG (Competition Boost)
4.00 V	352.5 kPa	3.53 Bar	+36.6 psiG (Extreme Boost)
4.50 V	400.0 kPa	4.00 Bar	+43.5 psiG (Full Scale Limit)

Motorsport Harness Pinout & Wiring Assignment

Terminate using 20–22 AWG MIL-W-22759 Tefzel wire and sleeve with Raychem DR-25.

Pin / Cavity	Function	Typical Wire Colour	ECU Termination Notes
Pin 1 (A)	Sensor Ground (0V Analog Ref)	Black / White	Connect strictly to ECU Sensor 0V (Emtron AN GND), never chassis ground.
Pin 2 (B)	Regulated +5.0V Supply	Red / Blue	5.00 V ± 1% ratiometric excitation from ECU +5V sensor rail (<10 mA draw).
Pin 3 (C)	0.5–4.5V Pressure Output	Green / Yellow	Connect to ECU Analog Voltage Input (AN Volt) with internal pull-up disabled.

Interactive Calibration & Sizing Workbench

Injector Sizing, BSFC & Bosch 200 Pump Head Calculator

Compute required static injector flow (cc/min) and high-pressure fuel pump capacity across Petrol 98, E85 ethanol, and Methanol using Bernoulli square-root rail pressure scaling.

Target Flywheel Power (HP)

Engine Cylinders

Fuel Stoichiometry & BSFC Profile

Max Safe Injector Duty Cycle (%)

Base Differential Rail Pressure (Bar)

Peak Manifold Boost Pressure (Bar Gauge)

Q_new = Q_rated × √(P_new / P_rated) | P_pump_total = P_base + P_boost

Req. Flow @ Rail Pressure 1050 cc/min

Nominal 3.0 Bar Injector 972 cc/min @ 3.0 Bar

Total Fuel Pump Demand 213.4 L/h

Reference Hardware: Bosch 200 External Fuel Pump (0 580 254 044, $200.60 NZD Archive) delivers 275 L/h @ 3.0 Bar and 235 L/h @ 5.0 Bar total head.

Two-Point 0–5V Ratiometric MAP Pressure Calibration Generator

Generate a 9-point linear voltage-to-kPa calibration table for Emtron KV/SL, Link G4X, and Haltech NSP ECUs. Default preset matches the HV 4-Bar MAP Sensor (HV-MAP-400-NPT).

View Full JSON Spec

Linear Transfer Equation P(kPa) = 95.00 × V - 27.50

Expected Sea-Level Key-On 1.34 V @ 100 kPa Baro

ECU Input Configuration 5.0V Ratiometric · Pull-Up OFF

AN Volt (V)	Absolute (kPa)	Absolute (Bar)	Relative Gauge (psiG)

Lambda (λ) ↔ AFR Multi-Fuel Converter & 1 Mbps CAN Frame Decoder

Convert wideband equivalence ratio (λ) across Petrol, E85, and Methanol, and decode raw 8-byte Big-Endian hexadecimal CAN frames from the HVLC2 Dual Lambda ($555 NZD) and HV EGT CAN ($483 NZD) modules.

AFR_fuel = λ × AFR_stoich | CAN Word = (Byte_MSB << 8) | Byte_LSB

Petrol (14.7) & Methanol (6.47) 12.05 : 1 (Petrol)

Pump / Race E85 (Stoich 9.76) 8.00 : 1 (E85)

Decoded 16-Bit CAN Channels Ch1 λ=0.820 | Ch2 λ=0.850 | EGT=900°C

Lambda (λ)	Petrol 98 (14.70:1)	E85 Ethanol (9.76:1)	Methanol (6.47:1)	Operating Regime
0.75 λ	11.03 : 1	7.32 : 1	4.85 : 1	High-Boost Rich Thermal Protection (>2.0 Bar)
0.82 λ	12.05 : 1	8.00 : 1	5.31 : 1	Peak Torque WOT Turbocharged Target
0.88 λ	12.94 : 1	8.59 : 1	5.69 : 1	Naturally Aspirated WOT Peak Power
1.00 λ	14.70 : 1	9.76 : 1	6.47 : 1	Closed-Loop Stoichiometric Cruise

Tefzel MIL-W-22759 Voltage Drop & Raychem DR-25 Bundle Calculator

Calculate round-trip DC voltage drop across tinned-copper MIL-W-22759/16 & /32 ETFE motorsport wire and select the matching 2:1 Raychem DR-25 fluoroelastomer heat-shrink sleeve.

Round-Trip Voltage Drop (ΔV) 1.165 V (8.44% @ 13.8V)

Recommended Raychem DR-25 Size DR-25-3/8 (9.5 / 4.8 mm)

Insulation Rating 150°C ETFE · 600V RMS

AWG Size	Stranding	Resistance @ 20°C	Nominal OD	Bundle Max Current
22 AWG	19/34 Tinned Cu	51.5 mΩ/m	1.32 mm	5.0 A (Sensors / Triggers)
20 AWG	19/32 Tinned Cu	32.0 mΩ/m	1.52 mm	7.5 A (Injectors / Solenoids)
18 AWG	19/30 Tinned Cu	20.3 mΩ/m	1.78 mm	10.0 A (Ignition Coils / LSU 4.9)
12 AWG	37/28 Tinned Cu	6.3 mΩ/m	2.92 mm	25.0 A (Bosch 200 Fuel Pump)

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