If you run an open air box, it could be coming in from the bottom if you have drilled it out.

I went back to a closed UNI filter, effectively making mine a "stock airbox" again, only with a UNI instead of the TRIUMPH filter.

Stalled in the rain twice, and the rain was not that hard, just wet road and road splash on the highway sogging the lower end of the UNI - it would start back up after a minute or two, but it did not take long to figure out what was causing it. I could see how the bottom of the air filter was washing out, and I had drilled the entire bottom of my air box out along with the bottom of the air filter.


Keith
Houston
Ridin'Texas
'04 Speedmaster
AI removed, Pingle, UNI Filter, 1 shim, straight-through slash-cut TORs, Stage 1 DynaJet, 140 mains, 3 turns, 16/42 final drive, 115K
2020 T120 Black