Pods flow a lot more air than the OEM filter Ernie, so 99% of bikes will run lean when you add pods. My Suzuki GS1000S runs so lean without the filter, it will not "pull" under load, past idle speed.
You'll need to adjust your idle mixture screws, (If you've got them, I know that some US-market bikes had the mixture screws blanked off by the EPA, so you might need to source bigger pilot jets) and even though you say it's running fine when warm, I'd at least do a plug chop to check the mixture, because if it's too lean, it'll melt holes in your pistons, and kill your engine.
If it is running too lean, you may need to raise the slide needles, or go for bigger main jets. Cheers, Terry.