I chatted with a Doorman rep today and they say that they have had no reported issues with filling the tank, if he's just saying that who knows? We'll just see what happens and I"ll report back . As I said if this doesn't work I'll go with a FI setup or even just go back to the original tank (which looks clean inside), and if that doesn't work, I then have a good reason to sell the car. Doubt I'd actually sell it, but I'll sure threaten to. I can't even imagine a world that you are out on a drive with some buddies and have to tell them to wait a half an while I get gas. My luck is such that if I were to cut the fill tube off and swap it, something is going to go wrong.