Tune needed or not?

Why is the torque so low? I'm not seeing anywhere near 221 newton meters on these dyno runs.
Peak torque is between 4000-5000 rpm. An increase of 30 peak rwhp from simply opening the electronic throttle seems pretty substantial. Triumph restricted the old Rockets too. This engine could put out a lot more power depending on how much $$ you want to put into it.
 
Personally i think that chart is not bad ...the A/F ratio starts off lean which is to be expected due to no petrol in the system at start up but then runs a little rich (which is better than lean right?)...we have to remember the figures quoted by Triumph re HP and Torque are from a motor in a frame not in an actual bike...(so ive been told...correct me if i'm wrong), so on a dyno you will see lesser numbers due to the road resistance thru a driveshaft on the rollers...I personally would. were the bike mine, get it on a dyno and have it tuned so the A/F ratio was less rich...There may be some trace of black smoke from the exhaust and this is because of the richness in the tune or even a smell of petrol if you were following this bike....just my 2 cents worth.
 
@Tal @dougl @R-III-R Turbo @Neville Lush
I opened exhaust and took photos so i can get help verifying if its lean or not, this photo is after running 6000km/3700 miles on Penner tune + Werkes Exhaust. Can someone please tell me if this is lean or rich and does it match the with 12.64 AFR ratio seen in dyno chart?


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The 12.64 is at wide open throttle. You won't be able to hold it wide open long enough to colour the pipe. Any perceived colour in your pipe will be from low end running. Forget the exhaust colour, MEASURE the af across all ranges as the bike is tuned.
 
As mentioned previously... your bikes ability to "self adjust" air fuel ratio is only in the closed loop range of cells within the fueling map. If you have Tune ECU, and you pull up the factory map and go to the AFR tables, the areas of auto adjustment will be shown as the cells that are listed as 14.5 All other cells outside of this 14.5 range will be controlled by what's written into the map. If your goal is better performance, (who's isn't) when you installed the free flowing air cleaner, then the self adjusting areas of the map will not really be seen when your hard on the throttle. Outside of the closed loop portion of the map you will only see better performance in the ranges of the map that are running richer AFRs, assuming that your free flowing air cleaner is actually able to flow more air in them specified ranges. To sum it up.... If the factory fueling is set to run a bit richer than optimum, in the higher load cells , AND your new air filter flows better in them particular ranges, then I would say that you will see an increase in performance, provided that all other things that affect airflow through the engine are able to efficiently flow the additional air POTENTIAL offered by the new air cleaner. I stress the word potential because the air cleaner is just one of the possible restrictions in the path of airflow.
 
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As mentioned previously... your bikes ability to "self adjust" air fuel ratio is only in the closed loop range of cells within the fueling map. If you have Tune ECU, and you pull up the factory map and go to the AFR tables, the areas of auto adjustment will be shown as the cells that are listed as 14.5 All other cells outside of this 14.5 range will be controlled by what's written into the map. If your goal is better performance, (who's isn't) when you installed the free flowing air cleaner, then the self adjusting areas of the map will not really be seen when your hard on the throttle. Outside of the closed loop portion of the map you will only see better performance in the ranges of the map that are running richer AFRs, assuming that your free flowing air cleaner is actually able to flow more air in them specified ranges. To sum it up.... If the factory fueling is set to run a bit richer than optimum, in the higher load cells , AND your new air filter flows better in them particular ranges, then I would say that you will see an increase in performance, provided that all other things that affect airflow through the engine are able to efficiently flow the additional air POTENTIAL offered by the new air cleaner. I stress the word potential because the air cleaner is just one of the possible restrictions in the path of airflow.
you are genius, I am going to dyno tune.
 
you are genius, I am going to dyno tune.
Id also add that if you're blown as your profile suggests, then the forced induction even at lower boost levels would force the air through most any slight restriction. This is the very reason that when you go with forced induction, things like bigger valves, and cylinder head porting become less of an issue. The money you save in cylinder head parts and labor would be best spent at beefing up the bottom end!!!
 
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