yea the RRM CAI uses the stock 90* elbow and you should have not touched the hoses at all.....and did you put the elbow all the way on? I had to fix mine yesterday because the elbow started to come off the bottom. Just check every thing but Im also throwing a code so I think its just normal

 

yes i did not touch the stock 90 elbow and that is where the hose. and i put the piping up more so i hope that does the trick. and everything is tight and in place

 

if you unplugged your maf sensor you need to let your ecu reset for the intake. when i installed my injen sri i didnt unplug anything but when i finish installing it i took it easy so that the ecu could reset for the sri if needed.

 

first guess would be a vacuum line

 

your probably throwing the lean code like many of us are... but until someone gets a wideband and figures out whats going on... we don't really know how to fix the problem...

as far as your idle just like everyone said... there is air getting in somehow