If you think it is your injectors, then, take the plastic engine cover off.
Very easy, and you should be able to read the part #s of all your injectors.
Then look up the injector recall thread to make sure you have the correct part #.
2nd. But 2 cans of BG 44K.
Fill up, shell premium. And ad 1 can.
Run complete 2 tanks, even 3.
Then fill up, and ad, the 2 can of BG 44k.
Then wait for the cleaning for 2 to 3 tanks.
Let's see what happens.
Most importantly, update your injectors, if they are old recall onces.