Back in Aug 2009 I replaced the injectors (2 died with excessive Ohms) in my 92 NA with the updated non pintleless type (stock OEM). Did NOT do electrical revision to remove 12v at injectors when engine shut down. I have been using E 10 but I add Stable when adding gas (put in 10 gals at a time). I use car maybe 20 miles a week so gas sits 8-9 weeks between adding fuel.
Been 7 years and no injector failures and runs same as day injectors were replaced. IMO 12v conversion seems not necessary (but like chicken soup it wouldn't hurt) but Stable working to keep corrosion down or none.
ZUL8TR in Orlando,FL
Follow Ups
FYI Update on injector replace - ZUL8TR06:18:54 08/14/16