500efi upgrade kits.
#5
#8
Registered
Joined: Mar 2007
Posts: 329
Likes: 1
From: Broadalbin, NY
#10
Registered

Joined: May 2004
Posts: 456
Likes: 0
From: Monroe, MI
Mine are the carbed 500's. I don't have my dyno sheets with me but they were around 650 at 5800 rpm. Tyler also did a 500EFI motor for a buddy of mine and he loves it. Tyler reprogrammed his computer after all the upgrades and he says it idles nicer now than it did when it was stock.


