Well...I've been running my current setup (see Profile) for at least a year now. I'm able to monitor my AFR's, fuel press. from Idle to redline thru the Haltech sensors and haven't seen anything that would warrant me to data log. I did notice something however when I relocated the battery to pass. side trunk and wired the pump directly to battery. (I used the original fuel pump power wire as the signal for my new installed relay.) The pressure went up almost 3psi at idle.