Place the pork shoulder in the slow cooker.
In a medium sized bowl, combine the garlic, ginger, brown sugar, sambal oelek, soy sauce and the zest of two limes and juice from one lime.
Pour mixture over the pork.
Turn slow cooker on low and cook for 8 hours on low or 4 hours on high, or until the pork is cooked through and can be easily pulled apart.
Remove pork from slow cooker and pull apart or chop into small pieces, reserving the liquid in the slow cooker.
Cook ramen according to package directions.
Drain ramen and mix with pork and the liquid from the pork.
Plate the ramen and pork.
Top with green onions and squeeze of lime over top.