Originally Posted by RONIN FC' date='Oct 24 2003, 12:13 AM

But you should know better than to run upgraded injectors on a 15 yr old fuel pressure regulator! https://www.nopistons.com/forums/pub...1047683664.gif The stock FPR sometimes getts too weak to support the stock injectors. I personally dont think its a coincidence that your engine pings as soon as the 720's come on. But at the same time this isnt the first time you heard this from me.