Just for grins I pulled the airfilter out and replaced the plastic cartridge then went for a quick lap around the block. The ass-ometer tells me it tached a little faster at the higher RPM. Rather than installing a MAP sensor and measuring the readings at WOT, this test was a quick look-see. It seems to me the tiny air filter area could be a restriction at higher RPM. Anyone play around with this or have any measurements to support this idea? I just wanted to ping the forum before I waste my time rigging up a sensor. Thoughts?
Plenty of folks have modified the airbox. I do believe there is a slight hp gain. This is my topic on it, there are plenty more. http://www.cafehusky.com/threads/how-to-change-the-tr650-air-filter.40519/
I am happy with the pod mod. Before this my Terra was pulling near 10 percent better without the stock filter fitted. (Staintune pipe thread) but that was without having my TPS reset property. Also a good thing- Highfives, glue in bracket that turns the filter around would damn near triple the outside filters surface area.
Just did the pod mod yesterday. Most of my miles are commuting, but I've got about 800 miles of trail time. My throttle body was filthy. I slept great last night. No more worrying.
