GoWesty Fuel Injection Component Replacement Kit (GW-EFI)
For many years now, the "Achilles' heel" of the 1983-91 Vanagon has been the antiquated and usually-problematic Bosch engine management system. Even when it was brand new, it was far from perfect. Fast forward over thirty years, and one finds as that every wire, connection, and component has the potential to bring your perfectly planned road trip to a screeching halt. Volkswagen themselves knew the system had genuine flaws, as did every Vanagon owner, repair shop, and parts retailer. For over a decade, we explored fixes, patches, upgrades, and improvements. We were convinced we could get it to work reliably, but we were wrong. Short of Volkswagen releasing brand-new parts to completely replace the entire system, the original Bosch management system was going the way of the Dodo.The writing was on the wall: The system had to be replaced with something smarter and more reliable. But what would this be, and who would invent such a thing? Who else? GoWesty! We rolled up our sleeves back around 2012 and got to work! After thousands of test hours, tens of thousands of test miles, and an unbelievable amount of effort, we were finally able to release this system in January 2018! Read the full story.This product does the following:Replaces no-longer-available-new (NLA) Bosch componentsImproves reliabilityImproves fuel efficiencyImproves performanceAdds self-diagnostic capability (OBD-II) via ScanGauge Display*Compatible with any 1986-91 waterboxer currently running Digifant fuel injection!Smog-legal in all 50 states! Executive Order #D-786-2*The basic ScanGauge2 delivers a compact digital display that gives you the info you need without the frills. The ScanGauge3 is a larger full-color capacitive touch display with many additional display features not found on the smaller unit and is worth every penny in our opinion!ScanGauge2:• Small display with fixed illumination• Displays four basic digital readouts at a time • Read & Clear Trouble CodesScanGauge3: • Displays your choice of 4, 6 or 9 Graphic Gauges at a time• Multi-Color Capacitive and Dimmable Touch Screen• Read & Clear Trouble Codes• Visual & Audible Alarms• Free WiFi firmware update capabilityMore ScanGauge Specs from the Manufacturer: SCANGAUGE2 vs. SCANGAUGE3Do you have a 1983-85 Vanagon with Digijet Injection? Read this articleComponentsThe GoWesty Engine Management System is comprised of:New Electronic Control Unit (ECU)Replaces no-longer-available (NLA) Bosch ECU and Idle Control Unit (ICU)Has standard OBD diagnostics via OBD-II - Added featureCompatible with standard real-time parameter displays, including ScanGauge - Added featureCapable of future software updates if/as needed - Added featureSequential-fire injection instead of batch-fire injectionAll-new Billet Aluminum Throttle Body with modern TPSReplaces worn-out original throttle body with a new redesigned unitModern, sealed TPS replaces antiquated and NLA factory throttle position switchObtains accurate throttle position throughout the throttle rangeModern manifold absolute pressure (MAP) sensorAdded sensor for better fuel management controlUsed to obtain engine load and barometric pressure readingProvides data for automatic altitude compensation—added featureNew oxygen sensorReplaces antiquated factory oxygen sensorModern 4-wire design with sealed electrical plug—added featureUsed to adjust fuel trimsNew knock sensor and controller Added sensor to protect engine against detonation/pre-ignitionUsed to detect detonation/pre-ignition (called knock) and retard timing to mitigate detonation/ pre-ignitionModern distributor-less ignition systemNew electronic coil-on-plug ignition coils replaces antiquated factory single coilNo more high-voltage ignition wires - a common source of spark that causes engine compartment fires - new featureGoWesty-designed cam position unit and crank position wheel replaces antiquated distributor, cap, rotor, wiresUsed to accurately determine crankshaft and camshaft positionModern Mass Air Flow (MAF) sensor in GoWesty-designed MAF housingReplaces antiquated and NLA factory "trap door" air flow meterMeasures mass of incoming air in order used to calculate required amount of fuel injectionGoWesty Tachometer AdapterConverts the digital tachometer signal from the more modern ECU to a signal that the factory tachometer will readGoWesty Fuel Injector BundleModern, brand-new, flow-matched injector set designed specifically for our EFI.ScanGauge OBD-II Kit & Dash MountThe ScanGauge adds an OBD-II dash display to your GoWesty EFI System. This is a must-have tool for monitoring the health of your engine in real time, and is indispensable when it comes to diagnosing issues. Your choice of ScanGauge2 (smaller black and white display) or Scangauge3 (larger color display with touch screen).GoWesty-designed all-new engine management wiring harnessReplaces prone-to-moisture intrusion, antiquated, corroded, and NLA factory harnessAll modern, completely sealed connectors for years of trouble-free service in all conditionsAlso included with every kit is a GoWesty ALT-HARNESS to ensure a reliable power supply to the system!Tech NotesTECHNICAL NOTES & CONSIDERATIONS: Ignition timing: Timing is set to original factory specifications. 35 degrees at 3000 RPM. Idle speed and fuel mixture is not adjustable and is completely automatic, as it was (supposed to be!) with Digifant.Existing Components: Several components of the original fuel injection and delivery systems are not replaced by this kit, and their proper operation is critical for the new GW-EFI system to work properly and reliably. It is HIGHLY recommended that all of these listed below be replaced if they are original, or of unknown age. GoWesty will continue to supply these items individually for the long-term, of course.Fuel pressure regulatorFuel pumpCoolant temperature sensorPower steering pressure switchDownload the installation instructions on the "Instructions" tab to see the pre-check procedure.Warranty & SupportThis system's components (except ECU) are warranted against defects for 12 months/12,000 miles (whichever comes first).The ECU is warranted against defects for 10 years, unlimited mileage.Professional installation is highly recommended.Technical support for issues at start-up will be offered free of charge, but only between GoWesty support staff and a professional technician.Technical support is otherwise offered at $75/hour, See item GW-TECH-SUPPORT.EmissionsEMISSIONS INFORMATION: Gowesty Fuel Injection Component Replacement Kit (GW-EFI) has received an official California Air Resources Board (CARB) Executive Order #D-786-2, and is smog-legal in all 50 states.InstructionsInstructions:GoWesty Fuel Injection Component Replacement Kit - Installation PDFGW-EFI Mechanic's Guide GW-EFI HandbookGW-EFI Wiring DiagramGVW-SCANGAUGE-KIT - Installation PDFEstimated Installation Times:Professional VW mechanic first time GW-EFI install : Estimated 10-12 hoursProfessional VW mechanic, who has previously installed the GW-EFI: Estimated 8 hoursAmateur: Estimated 14+ hoursReplacement PartsNeed replacement parts, like an oxygen sensor or an ignition coil? Fear not, we based our system around readily available parts that you can source from virtually any auto parts store, or pop some in your cart from the list below.Mass Air Flow (MAF) SensorCam & Crank Position SensorManifold Absolute Pressure (MAP) SensorKnock SensorOxygen SensorIgnition Coil PackSpark PlugPrefer to hit up your local parts supplier? Download the Local Auto Parts List PDF