Rough idle after camshaft swap on Altima.

[3dKa24]

Hello, I swapped out my intake cam for an S13 248 duration exhaust cam Yesterday. Now the problem is the car idles extremely rough and sometimes my RPM's dip below the norm and the car starts bogging like its going to die and it has a couple times while driving. Also out my muffler I feel a strong rush of air like every other second I mean you can hear it like it was stroked. I also replaced my spark plugs yesterday and I checked them today and they have dark deposits around the tip ( I've only driven about 80 miles since I installed the cam). Could it be im off with my cam timing or could it be ignition timing because I pulled out my exhaust cam and removed my distributor. BTW my car is a 2000 Altima SE with 90K, it was running fine before the swap.Thanks for any replies.

[3dKa24]

Turned out my ignition timing was way advanced fixed that with a timing light, also my intake cam was off by a tooth took care of that and now its pulling hard as ever and rpm's are holding steady. Thanks guys all the info was on this site, best bang for the buck mod -50$ on ebay for the set of cams.