Easily installed on most motorcycles, ATVs and UTVs the SAFR provides a simple analog gauge with a wideband O2 system that displays the vehicle's air / fuel ratio (AFR) values and allows riders to fully understand how their vehicle is running. The SAFR is a diagnostic tool which ensures the vehicle is running at optimum levels on the street or in the dirt. It is not intended to be a permanent installation. The unit is fully compatible with all vehicles.
The SAFR (Standalone Air/Fuel Ratio) tool was developed to address the need to quickly understand the state of tune on a vehicle without the hassle of welding in an O2 bung or splicing in wires to power the system. Easily installed on most motorcycles, ATVs and UTVs, the SAFR provides a simple analog gauge with a wideband O2 system that displays the vehicle's air/fuel ratio (AFR) values. The AFR readings allow a user to make sure a vehicle is running at optimum levels on the street or in the dirt. The SAFR is not intended to be a permanent installation. The unit is fully compatible with all vehicles. The SAFR works on carbureted or fuel injected vehicles. The diagnostic tool also works on 2 stroke or 4 stroke engines.
- NO WELDING REQUIRED
- PLUG AND PLAY POWER
- RENT OR PURCHASE
- ANALOG NEEDLE DISPLAY
- WIDEBAND O2 SYSTEM
- NO FREE AIR CALIBRATION
- TEMPORARY INSTALLATION
- COMPATIBLE FOR ALL FUEL TYPES
- 1-YEAR WARRANTY
UNDERSTAND GENERAL TERMINOLOGY:
Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment.
Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas.
UNDERSTAND AFR VALUES:
AFR Values & Characteristics in Four Stroke Engines
6.0 AFR - Rich Burn Limit (engine fully warm)
9.0 AFR - Black Smoke / Low Power
11.5 AFR - Best Rich Torque at Wide Open Throttle
12.2 AFR - Safe Best Power at Wide Open Throttle
13.3 AFR - Lean Best Torque
14.6 AFR - Stoichiometric AFR (Stoich)
15.5 AFR - Lean Cruise
16.5 AFR - Usual Best Economy
18.0 AFR - Carbureted Lean Burn Limit
22.0+ AFR - EEC / EFI Lean Burn Limit
Lean Conditions - Common Side Affects
Hotter Engine Temperatures
Detonation / Pinging
Hesitation in Throttle Response
Rich Conditions - Common Side Affects
Engine Flooding
Decel Pop / Backfiring
Lethargic Throttle Response
Excess Carbon Build-up (sooty pipes)
Fuel Smell from the Exhaust
NARROWBAND vs. WIDEBAND O2 SENSORS:
Due to emission regulations the use of O2 sensors has become prevalent in the powersports industry on OEM vehicles. The concept of implementing an auto-tune / closed loop / self mapping fuel control system has also become prevalent in the after-market tuning industry. A huge misunderstanding results from the type of O2 sensors which can be used in each application. The AFR+ system uses a wideband O2 sensor to display the full range of AFR values and target performance AFR values along with fuel economy AFR values.
A Narrowband O2 Sensor is only calibrated to know whether the current AFR is rich, lean, or stoich. The sensor targets a NARROW range around the stoich AFR value of 14.6 to help stock ECU systems fuel trim to meet emission standards.
A Wideband O2 Sensor is much more sophisticated and can supply the exact AFR measurement across a WIDE range of possible AFR values.
Kit Contents:
1 x DP Mini-Wideband Assembly - 52 inches
1 x DP Mini-Wideband 4 ft extension harness
1 x DP SAFR AFR Gauge
1 x DP O2 Chamber
1 x DP 39 in Extension Cable
1 x DP Exhaust Probe
1 x Bosch O2 Sensor
1 x Gauge Mount
1 x Nutsert Tool
1 x SAFR Hardware Pack (5 x Nutserts, Washers, Cap Screws)
1 x 25/64" Steel Drill Bit
1 x Cigarette Lighter Power-Up Harness
1 x Battery Tender Power-Up Harness
1 x 12V Battery Direct Power-Up Harness
1 x Power-Up 48" Extension Harness