it a 93 240sx hatch 5 speed wen it idles about 800 where it should bit went i go down the road and come to a stop its like its wants to stall but u here a click noise about 3-4 times then it s goes back to idle fine same thing wen i rev it any help whould be great full oh it no the maf i think it might be the feul or plugs or egr not sure and i just put on the hks filter and dont know the effect of the second hose from the air box can it be removed or plug still a newbe to the whole nissan thing thanks again for all the help guys