nope, not that i am aware of. It's not the end of the world though because even though its only 13.7v, i still have the amperage behind it and this car isn't an SPL car......so it does just fine. It would be nice to have the extra 1-2v but if nobody can figure it out at the moment, i will just have to live with it. I am the ONLY person in the world (almost positive) with a HO alt in a Lexus ISF so it's not like there are a lot of people doing research on it.