I'm still looking on EM since I haven't seen any hard numbers yet I did a google search and found on an LS7 Corvette it made a 13 HP difference accross the entire rpm range on the dyno run.
That has to be a really good amount when combined with the alternator delete?
someone has to have tested this out.
Forgot to add the link
http://www.vetteweb.com/tech/vemp_08...s/viewall.html
another link stating up to 17hp on a 170 hp engine
http://www.torquecars.com/tuning/ele...ater-pumps.php