Intake breathing runs
Stock Filter vs. NO airfilter: This graph
compares the output of the engine with the stock airfilter installed and
with NO airfilter installed.
Figure 2, Stock vs. NO Filter Runs
- Parameters: Run007
Stock air filter with approx. 15k miles on it
Timing at 30 degrees full advance at 6k RPM
Sunoco Ultra, 94 octane
- Parameters: Run009
No air filter
Timing at 30 degrees full advance at 6k RPM
Sunoco Ultra, 94 octane
- Conclusions: Considering these runs (and
several more we did which were so the runs overlapped), it appears that
the stock air filter - even after 20,000 miles is not a restrictive element
in the air intake tract in the K bike.
- DynoMain