Dynojet help please!

[jtonga]

Soooooo… How is your bike running now? :dontknow:

It seemed to be running fine before, but keeps hitting me with a lean code (bank 1). Last time check engine light went away on it's own, but has now stayed on for almost a month. With the great guidance of Snowbelt Spyder, I've made adjustments to the closed loop and O2 Optimizer sensors.

So basically it's now just a ride-and-see... hope to do the riding part tomorrow. Finally free for a few days and heading into some real nice weather, so definitely will report back soon!
:riding:

 

[jtonga]

UPDATE!

Extremely grateful for this site, and hereby declare Snowbelt Ryder AFR-Master! The check engine light disappeared after turning the bike on and left idling for 10 minutes. Talk about a quick response time! Thank you sir for providing me with the perfect AFR recipe. Took it for a 60 mile ride and bike runs great, best it has yet! So for anyone with the same Dynojet equipment (PCV & O2 Optimizer) and the same problem (P1171/Lean condition), change the 8's to 9's in the closed loop AND adjust both Optimizer sensors to -2.

Once again, Spyderlovers to the rescue :bowdown:! You guys are :firstplace:

 

[STSScreaminDemon]

This thread is a few years old but recently purchased/installed the PCV though having trouble finding the o2 optimizer. Seems to be running fine, but this thread seems to suggest the PCV is worthless without the optimizer since the ECU is constantly trying to counteract the PCV settings. Maybe I'm over simplifying, but why can't the stock o2 sensor leads be capped with something that provides the .45 V to the ECU so it doesn't try to adjust? Wouldn't it then just supply fuel based on the stock map. Then use Autotune Dual Channel option and replace the narrow band sensors with the supplied wide band sensors to get an accurate reading for AFR and get PCV map trims based on that. If this is possible, it would seem to be the ideal option. Please correct me if I'm missing something.

 

[Snowbelt Spyder]

The short answer is that what you've described is a violation of the clean air act and nobody will make the O2 sensor mod that you want. But, you could make it yourself, I guess. Google Harley Davidson and EPA lawsuit. It all started in Aug of 2016, and shortly thereafter, the O2 Optimizer disappeared from the Dynojet product line. It took 4 years but Harley ended up paying 12 million. Now, you can still adjust the open loop area of the fuel map with the PC V. That's the last 3 columns on your map that already have values in them from Dynojet. In that region, the stock O2 sensors are not in control. But in the closed loop region, any changes you make in the map will be compensated for by the ECU because of the O2 sensor control loop. So, as far as aftermarket tuners go, they must leave the stock O2 sensors alone or face the wrath of the EPA. Even if a product was marketed as off road / racing use only, if it could be used on the road, as was the Screaming Eagle Pro tuner, it's a violation.

Doing all of the mods that you described would end up costing you more money than sending away your ECU for the flash, and you still would have no idea how well your tune is working without getting on a dyno. I see a very limited market for the PC V these days, especially without dyno time. That’s a lot of money for a limited or unknown amount of additional horsepower.

 

[STSScreaminDemon]

I was wondering what happened to the O2 Optimizer; makes sense. Thank you for the additional info. Unfortunately, my Spyder is my daily driver so don't have the opportunity to pull out the ECU for flashing. Luckily my main focus is in the open loop area of the map to take advantage of my exhaust and air intake mods. I just liked the idea of being able to set a specific AFR throughout the map and not having to guess what's happening. My ride is pulls strong but like you said, I'm not sure I accomplished anything without a dyno run.