HKS AF KNOCK AMP 2/3 A/F Sensor (hks44999-AK022)
In Stock. Pre-order.
Ships in 10+ weeks
The HKS A/F knock monitor is an extremely valuable addition to any vehicle that has undergone extensive modifications. Indeed, for those who are likely to use the HKS F-Con Pro ECU then its use is virtually essential. The unit consists of a visual head unit that shows both knock and air/fuel ratio data. A remote-mounted separate signal amplifier is used to help keep the size of the head unit as compact as possible. The amp can be mounted anywhere in the vehicle out of sight. The knock (detonation) side of the unit picks up from the original sensor/s mounted to the vehicle. The sensitivity of original equipment sensors can vary from car to car and thus it is the tuner's decision to decide whether they are accurate enough for the purpose of monitoring or not. The air/fuel ratio side requires the use of an extremely sensitive wide-band Lambda sensor. HKS recommends the Japanese NTK sensor as it is one of the most accurate available. Unfortunately, these sensors are very expensive but at the moment we have not come across an equivalent alternative and as air/fuel ratio monitoring is taken very seriously we have no option but to continue with the NTK setup. The unit is extremely useful when used in conjunction with any F-Con Pro setup as not only is the factory knock detection system rendered inoperable but the F-Con Pro can also use the air/fuel ratio data supplied by the HKS knock monitor to self-learn and therefore map the fuel curve. This can save huge amounts of expensive mapping time and will go some way to offsetting the cost of the knock monitor and wide-band NTK sensor.
- Special Order
- Pictures may differ in the actual product
- A/F Knock Amplifier
- Use with HKS F-CON Pro ECUs
- Wideband Lambda-Style Sensor
- High-Quality Wiring
- Length: 120
- Width: 35
- Height: 170
In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on final sales, special orders, opened, installed, incomplete, or otherwise used products. In order to initiate a return, an RMA number must be requested and approved via e-mail.
All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).
Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.
For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.