hi! insure the brackets are all fully bolted in!! and be aware of the ring clips, they tend to slip off! tighten everything to an extent (not to much) and try it again (still making bogging noise?) try cleaning out the air filter, st remove top half of the box and remove the air filter and wash with any car cleaner or proper air filter cleaner (i tend to use brake cleaner and my air compressure to blow the cleaner down into the ridges!) leave to dry for a good while!! try it again and let me know how you have got on!!
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