Everytime i give my car throttle and it has any significant load on it it sputters and sounds like its missing on a cylinder.

I have a Boost/vacuume gauge, any time i give it more than about a quarter throttle and my vaccume gauges shows less than 5 inches of HG it sputters and acts like it is missing.

I recently changed spark plugs and since than it has been having this problem.

Anybody have any ideas what might be my problem?

 

check the distributer cap and rotor or maybe your plugs arent all the way plugged into the distributer

 

check spar plug gap and spark plug wire