Have a 2000 Elise, converted by Sun International. (any one have their Number?) While driving it slowed to a crawl then rezoomed. But getting worse. It won't idle from time to time. I discovered a bad fuel pressure sensor as it wouldn't hold vacumn, but no difference. Honda tells me it could be a bad main relay, but I don't even know if Sun used their own or Honda's and where it might be located. Any thoughts? Alan Lost in Kansas.