I thought that the e-ram only kicked in at WOT. Mostly because you can't vary the speed. Do you have it before of after the MAF?
It sounds like your wire may be too small. 8 guage wire would be the minimum, anything less and you will drop too much voltage. Measure the voltage at your battery and at the e-ram's terminals. If you are dropping more than 1 volt, your wire is too small.
BTW, I've always wondered if a 1 Farad cap would help out an e-rams "spool-up" time. Hmmmm....
HTH,
BP
