I believe they have whats known as smooth run adaptation which automatically help it learn the new injector values. I have had injectors reconditioned on these and had a big headache with one injector after recon. I tried everything but it still misfired and smoked. Ended up sending the injector back to get them to re-check it and it was fine(according to them) after refitting the injector it purred like a kitted again.