180,000 miles on stock lift pump with a Vulcan relocation kit with no issues. I ran a Catcher reprogrammed ECM (predecessor to the Smarty tuner) until a few months ago when the ECM was having significant issues with the delayed wait to start light problem and I swapped back to my original factory ECM. Factory ECM is a dog compared to the Catcher ECM. I am going to buy a Smarty to reprogram my stock ECM.