for a while, you may want to pull the in-tank filter screen and look at it's state. If it is gunked up, it may be prudent to have the tank cleaned. You could have a fuel flow problem caused by running that stuff.

If the tank screen looks clean, just keep a handful of primary fuel filters (the small plastic one) in the car for a while and keep an eye on that filter. Thats' why they are transparent.

Second jt20 irt nozzles. I replaced the Bosch with Bosio and the old car has never run better.