yes, there is one that works. we manufacture it. we have asked tpr magazine to do a comparison test between all of them, to tell the public what works and what doesn't work. the magazine has agreed to do this comparison test, BUT none of the others making a fake electric turbo(ebay) or even the mighty eram will accept this challenge. we have nothing to hide, but it seems that the others do. it's a shame that they keep screwing people over, the magazine feels the same way. i would give my web address, but i'm not sure if the moderator will remove it. you can e-mail me @ firstname.lastname@example.org
for further info. if you are interested.