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
Ça dépend de ta localisation et de ce que tu as commandé. Voici les délais estimés :
- France : livraison en 3 à 7 jours ouvrés.
- Europe & international : livraison en 7 à 10 jours ouvrés.
Certains produits sont en stock, d’autres non. On travaille avec plusieurs niveaux de stock :
- En stock : expédition sous 24h / 48h.
- Stock européen : expédition sous 48h / 72h.
- Stock USA : expédition sous 3 à 5 semaines.
- Précommande avec ETA : expédition selon la date estimée.
- Sur commande avec délai spécifique : expédition en fonction de la disponibilité.
Estimated carrier transit times are:
- France: 1–5 business days
- Most European destinations: 5–10 business days
- Countries outside the European Union: delivery times may vary depending on the destination and customs clearance
The dispatch estimate and carrier transit time are separate.
Compatibility
You can verify compatibility in two ways:
- Use the vehicle selector on the product page to check whether the part matches your motorcycle.
- Review the fitment table for the full list of compatible models and years.
Some parts may require additional components, modifications or a specific existing setup. Always read the fitment notes and product description before ordering.
Still unsure? Contact us with:
- motorcycle make and model;
- model year;
- exact version or trim;
- current modifications;
- product reference or link.
Our team will help you confirm compatibility before ordering.
Eligible items may be returned within 30 days of delivery.
To be accepted, the item must be:
- unused and uninstalled;
- in its original condition;
- returned with its original packaging, labels and accessories.
Parts that have been installed, damaged or modified cannot be returned.
Please contact us before sending an item back. Returns sent without prior authorization may not be accepted.
Return shipping costs remain the customer’s responsibility unless the item received is incorrect, damaged or defective.
Droits de douane & taxes
European Union
Orders delivered within the European Union are shipped from France. No import duties are charged upon delivery.
Countries outside the European Union
Local VAT, customs duties and carrier clearance fees may apply. These charges are determined by the destination country and remain the customer’s responsibility.
Payment Options
We accept major credit and debit cards, PayPal and the installment payment methods displayed at checkout.
Eligible orders may be paid in 3 or 4 installments, subject to the payment provider’s approval and applicable limits.

