Dynojet Auto Tune system, for J1850
For Power Commander 5 modules. Fits J1850; with a 4-pin OBD (On Board Diagnostic) port plug. In combination with this optional Auto Tune system the map for the Power Commander is automatically written; during riding. With the Auto Tune connected the rider can specify what Air/Fuel ratio (how rich or lean the mixture) should be; at each specific RPM and throttle position and/or gear selection; for the individual cylinders. Base settings are supplied. This enables to fully tune for good fuel efficiency during cruising and best power output at more open throttle positions. The Auto Tune is equipped with two Wide Band O2 sensors; which are included in the system. Wide Band sensors are more expensive than the standard narrow band sensors that H-D uses; but work much better; especially in quick changing throttle settings and will give superior tuning results.Fitment note: O2 sensorsKits come with 18mm wide band sensors; to replace the lesser quality OEM narrow band sensors. All kits include 18mm weld-on O2 sensor bungs. Late model exhaust systems; with 12mm O2 sensors; will require the use of these weld-on bungs to convert to the 18mm wide band sensors. Earlier models; with exhaust systems equipped with 18mm O2 sensor ports; will not require the included weld-on bungs. 01-06 bikes; that originally were not equipped with O2 sensors / O2 ports will; obviously; also require the 18mm weld-on O2 sensor bungs. Fitment note 4-pin or 6-pin plug models: The Auto Tune system is connect
It depends on where you are located and what you ordered. Here are the estimated delays :
- France orders will arrive within 3 to 7 business days
- Europe and international orders will arrive within 7 to 10 business days.
Some products are in stock others are not, we have different level of stock :
- In stock : Shipped within 24h / 48h.
- European stock : Shipped within 48h / 72h.
- USA stock : Shipped within 3 to 5 weeks.
- Pre-order with ETA : Shipping according to the estimated date.
- On order with specific delay : Shipping based on availability.
France Orders :
- France Standard : 0.00€ to 148.99€ = 7.90€
- France Standard - Free : 149€ and up = FREE
Europe Orders :
- Europe Standard : 0.00€ to 148.99€ = 19.90€
- Europe Standard - Free : 149€ and up = FREE
International Orders :
- International Standard : 0.00€ and up = 64.90€
Sometimes we are quick, sometimes we are not but we have never missed an order. Please be patient, you will receive an email with the tracking information.
If you still want to complain about your order not getting here quick enough and want to send 25 emails about why its not here yet, please email us at info@holydeath.com.
Some items may ship from different warehouses, which can lead to separate deliveries. Don’t worry—your remaining items are still on the way, and you’ll receive a tracking update as soon as they ship.
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn (no "new" smells) or unused, with tags, and in its original packaging. Parts once mounted cannot be returned. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at info@holydeath.com.
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days.
Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at info@holydeath.com.
Customs Duties & Taxes
No. All orders ship from within the EU, so you will never pay customs duties or additional charges. The price you see at checkout is the final price—no surprises.

