Dyno numbers - 2.5inch Headers vs Stock headers

[sunny]

Dyno runs charts are 2 years apart.
Both Dyno are from Different Businesses. Not the same Dyno machine.
Dyno1 was ran during Summer July, Dyno2 was run today in Nov.

Dyno run 1 is with Werkes Exhaust + Penner Tune + Stock Headers

Dyno run 2 is with Open Exhaust + Penner Tune + 2.5inch headers+ No oxygen sensor


Please provide your inputs and tell me recommendations/advice
Cheers

https://i.postimg.cc/VfpWct6d/dyno1.jpg High resolution photo

 

[20R3GT]

How I understand 165/164hp it kind off lost 0.5 hp? Considering it’s minimum 1000$ upgrade is not doing much ?? Or I’m something missing??

 

[sunny]

How I understand 165/164hp it kind off lost 0.5 hp? Considering it’s minimum 1000$ upgrade is not doing much ?? Or I’m something missing??

Both Dynos were from different businesses and not from same guy + Summer vs Cold weather Dyno run.

 

[stingray]

Doesn't seem like it made much difference. The 160 torque number seems like a fluke after shutdown, drum spin. Looks to be more around 135 to 140 before that anomaly.

 

[Kevin frazier]

Whoever is doing these base runs for you, can they tune your bike? It needs to be tuned

 

[sunny]

Whoever is doing these base runs for you, can they tune your bike?

not sure, as I went to a Ducati Dealership to get Dyno run.

 

[Kevin frazier]

Doesn't seem like it made much difference. The 160 torque number seems like a fluke after shutdown, drum spin. Looks to be more around 135 to 140 before that anomaly.

Thats torque line.

 

[Kevin frazier]

not sure, as I went to a Ducati Dealership to get Dyno run.

Where are you located

 

[sunny]

Doesn't seem like it made much difference. The 160 torque number seems like a fluke after shutdown, drum spin. Looks to be more around 135 to 140 before that anomaly.

what I dont understand is throttle response on the bike with open headers is way better than before, huge difference, I move throttle at any gear and it goes which was not the case before.
Second, with open headers my MPG has gone 30% down than before so I need 30% more gas per fill if I want to go same distance as I was going in one tank before open headers.

 

[vsteel]

I would say the data doesn't mean much because there were too many variables. To have real meaning you need to have a run, make the changes and then make the run again in a much shorter period of time.