Rep Power: 0

So I have a 2000 civic with 222k on it and recently the car would bog down for a second or two then be fine the rest of my trip,but yesterday my car bogged down and I kept pushing the pedal to no power then the car stalled,pulled over and it fires right back up drives like 5 miles then stalls. Let the car sit and it drives fine the rest of my trip. The problem happens at 75mph about. Car has a aftermarket header and exhaust on it along with a cold air intake all put on by the last owner,car has ran fine in the 4 years I’ve owner it and all of a sudden it started doing this. I have unplugged the iat because it was idle surging and it would die sometimes. I’m lost I can’t find anything like it on the internet. The only code I have is a p0113. The engine is a d16y8 also,I’m desperate for some help here guys.