FEATURED PRODUCTS



APSX B2 Digital Vacuum/Boost Display Gauge APSX B2 DIGITAL VACUUM/BOOST DISPLAY GAUGE

APSX Wideband B2 Boost gauge with 52mm gauge assembly, pre-assembled output cables and vacuum hose, 30PSI Black [default] faceplate.

Usually Ships in 24 Hours
Our Price: $42.50
50 in stock!
APSX D2 Wideband O2 Air Fuel Ratio Controller Gauge APSX D2 DIGITAL WIDEBAND O2 AIR FUEL RATIO CONTROLLER GAUGE ONLY

APSX D2 Wideband controller gauge with harness.

Usually Ships in 24 Hours
Our Price: $44.99
69 in stock!
APSX D2 DIGITAL WIDEBAND O2 AIR FUEL RATIO CONTROLLER GAUGE COMPLETE KIT APSX D2 WIDEBAND O2 AIR FUEL RATIO CONTROLLER GAUGE COMPLETE KIT

APSX D2 Wideband gauge and the Bosch LSU4.2 O2 sensor as a complete kit.

Usually Ships in 24 Hours
Our Price: $124.99
106 in stock!
APSX D1 Wideband AFR Controller APSX D1 WBO AFR Controller Kit

Wideband control unit (1.50” x 0.90” x 0.40”) with black plastic enclosure (1.75" X 1.15" X 0.60")

Usually Ships in 1 to 2 Days
Our Price: $34.99
35 in stock!
APSX 2 GAUGE COMPLETE COMBO D2 Wideband Controller + B2 Boost Display Gauges APSX 2 GAUGE COMPLETE COMBO D2 Wideband Controller + B2 Boost Display Gauges

D2 2 1/16" gauge assembly, pre-assembled output and oxygen sensor cables with connectors and Bosch LSU4.2 (part# 17014).
Same size B2 boost gauge color options are Blue, White, Orange, Green and Red.

Usually Ships in 1 to 2 Days
Our Price: $159.99
50 in stock!
APSX D1-DIY wideband controller board APSX D1 Digital Wideband WBO Controller Module (Board)

New D1 is only 1.50” and 0.90” in size (1/5 of a credit card size) and much more cost effective than any other wideband controller in the market today. APSX G1 LED AFR display and D1 cable harness (sold separetely) can be added for convenience.

Usually Ships in 24 Hours
Our Price: $19.99
98 in stock!


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Two basic functions performed by an engine management system (EMS) are to provide a SPARK AT THE RIGHT TIME (IGNITION TIMING) and to meter FUEL IN THE RIGHT QUANTITY (FUEL INJECTION).

ENGINE SPEED from the RPM sensor and ENGINE LOAD from the throttle position sensor or MAP sensor drives the injection and ignition. There are two maps for engine tuning. Fuel map is for injector timings and ignition map is for ignition timings. Also known as serial port tuners or OBD port tuning uses the OBD port to gain access to the maps via an interface. For ECU remapping, one should replace the factory EMS with an after-market EMS. ECU tuning software such as EFILIVE is a great tool with a data logger (datalogger) to increase the performance of an engine.

FUEL INJECTION system has fuel tank, fuel filter, fuel pump, injectors and pressure regulator for fuel return. IGNITION system use intake or temperature sensor to "correct' the air/fuel mixture for different air temperatures since the air density fluctuates when temperature changes. It can also use exhaust gas temperature (EGT) sensor to measure the temperature of the outgoing gases inside the header tube.

APSX WIDEBAND also provides the fuel options from lambda to AFR. Such as gasoline (A), lambda (L), E85 (E), diesel (d) and methanol (n). The user can change the fuel type anytime by using the gauge button at the back side as hidden under plastic tab. Just push your finger on the tab and sense the button clicking.