Engine miss on the 4agze

[heshan]

Hi guys,

I was out of the country for a few weeks and after I got back I didn't drive the car for a month or two so in total the car was idle for abt 4 months.

Now after I took the car out, there's a miss when I try to rev aggressively. I notice that the miss comes badly when I try to go beyond 0.5 bar boost in the super charger.

During this miss the car puts out the check engine code but I used to get the check engine without this issue as well so not sure whether its related BUT, after the check engine light comes on I feel the car reduces the missing slightly.

The missing majorly come before 3K RPM and reduce to an almost 0 after 3K.

Recently i changed the fuel pump to a 255LPH walbro and my sparks should be changed as well but can anyone tell me whether this could be related to either before I do something about the 2 possible causes.

Shall I do a throttlebody cleanup?

Any help would be greatly appreciated.

thanks.