Holley's single-channel EGT (Exhaust Gas Temperature) modules track exhaust temperature to help identify horsepower left on the table, weak links in a max-effort combination, or an early ignition misfire or stuck injector. The 554-188C is the CAN Bus version for Holley EFI systems, and comes complete with a K-type thermocouple probe, a 1/4" 316 stainless steel EGT bung, and the CAN module itself.
Specifications:
- Module Type: CAN Bus, 1-channel
- Compatible With: Dominator EFI, HP EFI
- Probe: K-type thermocouple, 60" lead, pre-terminated connector
- Bung: 1/4" 316 stainless steel with built-in step
- Voltage Range: 6.5V - 24V
- Operating Temperature: -40 to 221°F (-40 to 105°C)
- Update Rate: 60 Hz
- Part Number: 554-188C
The module mounts with a zip-tie or a pair of #6 or #8 screws. The supplied harness includes two CAN connectors (one male, one female) that plug into Holley main harnesses or part number 558-412 (Dominator only).
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
What EFI systems does the 554-188C CAN module work with?
Dominator EFI and HP EFI.
What's included with the module?
A K-type thermocouple probe with a 60" lead, a 1/4" 316 stainless steel EGT bung, and the CAN Bus controller module.
How is the module mounted?
With a zip-tie or a pair of #6 or #8 screws.
Can this be installed on a street-driven vehicle?
No — it's legal for Racing Use Only vehicles that are not registered or operated on the street.
