just so you are aware the 7427 will not fire the injectors sequentially. it only will run batch fire and you will have to wire the injectors accordingly. as far as cleaning injectors, i do it all the time now. recently went to the junk yard to get a set of injectors for a civic and then dropped them off to get cleaned. had to go back and get another set (8 injectors total) just to get a good set of 4 FWIW...

EBL is a cool product, but i don't really consider it an upgrade running it in parallel with the 7427. unless you are running forced induction or some other power adder.