Brentuning, open flash V4

Another tuning thread but i wanted something more up to date. I have a 21 streetfighter and i am currently in the beta process with them, I’m waiting on the map now. I didn’t really care for upmap at all, i can make a list of thing they need to work on. Open flash got some nice gains. So is everyone’s experience outside of upmap and the akra flash

open flash results below

what gear was this in?

I found significant differences in gains based on gear on my v4 im guessing the streetfighter would be even more so.

If you can, go back and compare 3rd-6th gear pre and post tune

you didnt do any runs with the arrow exhaust stock tune vs new tune?

vcyclenut said:

what gear was this in?

I found significant differences in gains based on gear on my v4 im guessing the streetfighter would be even more so.

If you can, go back and compare 3rd-6th gear pre and post tune

you didnt do any runs with the arrow exhaust stock tune vs new tune?

Click to expand...

I can ask shiv probably 5th if i recall

Does Open Flash require disconnecting of the lambda sensors?

No, it actually uses the lambda sensors to keep bike in closed loop during low load (typically cruising). It will save fuel and increase mileage compared to tunes w/o lambda sensors

Allramified said:

No, it actually uses the lambda sensors to keep bike in closed loop during low load (typically cruising). It will save fuel and increase mileage compared to tunes w/o lambda sensors

Click to expand...

Thanks pal. My second and third questions would be:
1. With the lambda sensors (or at least the plugs) still connected, won't the ECU try to remap itself like it supposedly does with the Up Map?
2. I've just notices that the OFT is for the 2020 SF only. Any idea about plans for the 2021 Euro 5 bike?

1) Yes that's the point. It adapts itself for good AFR at light loads. But as soon as you load it above a certain threshold, it goes into open loop and the "fixed mapping" comes into play. OFT handles both scenarios seamlessly.
2) I have no clue.

Quick question for you Go, does your 21 V4SF use a euro 5 cable to connect to the handheld? I think I was sent incorrect cables, but just wanted to confirm by someone who had had the system installed.

Gogoggansgo said:

Another tuning thread but i wanted something more up to date. I have a 21 streetfighter and i am currently in the beta process with them, I’m waiting on the map now. I didn’t really care for upmap at all, i can make a list of thing they need to work on. Open flash got some nice gains. So is everyone’s experience outside of upmap and the akra flash

open flash results below

Click to expand...

mixed44 said:

Quick question for you Go, does your 21 V4SF use a euro 5 cable to connect to the handheld? I think I was sent incorrect cables, but just wanted to confirm by someone who had had the system installed.

Click to expand...

Great question. I see you can buy a T800 with a Euro 5 cable but not sure if that is for the V2 or the SF V4 2021. According to UpMap they are still working on a tune for the 21 SF but don't know if that just means a specific tune or also the ability to hook up the device. Same question for OFT.

If the OFT works with the 21 Euro bike and doesn't require disconnecting the lambda sensor plugs then that feels like a good way to go.

mixed44 said:

Quick question for you Go, does your 21 V4SF use a euro 5 cable to connect to the handheld? I think I was sent incorrect cables, but just wanted to confirm by someone who had had the system installed.

Click to expand...

No i have the Ducati proprietary maintenance port not OBD2

Allramified said:

1) Yes that's the point. It adapts itself for good AFR at light loads. But as soon as you load it above a certain threshold, it goes into open loop and the "fixed mapping" comes into play. OFT handles both scenarios seamlessly.
2) I have no clue.

Click to expand...

the stock o2 sensors are narrow band and work well in a range that is outside of good air fuel range (lean) , by design when they see an air fuel inside the air fuel range we want the voltage output from them does not vary enough for the signal to be useful

here is a chart illustrating what i am talking about

an o2 sensor puts out a voltage based off of the air fuel it sees. Narrow band o2 sensors are set to center around stoich or 14.7:1 air fuel. For good throttle response we need to be somewhere around 13.7:1 at light throttle and cruising. You can see north of approx 15.2 air fuel and south of aprrox 14:1 the voltage out put is flat . Meaning the o2 sensors is going to output basically the same voltage for any air fuel below 14:1 so you cant use the voltage to tell the difference between air fuel ratios in this range. when you add in the normal tolerances in voltage outputs from one sensor to another you can see that narrow band o2 sensors are not good at anything but making our bike EPA compliant