Injection systems work really well once you get it set up. Most people make the mistake of playing with the barrel valve with out a leak down checker. If you set the barrel valve with the correct amount leaking by the barrel valve with the butterfly closed tthen all you will ever have to do is put the correct nozzel in and change the main jet until you get the egt's where you want them. From cold weather to hot weather you might change the main jet. I ran a Terminator on all my SBC for 5 years with no problems. Now running BBC with 1250 Bolaws alcohol, much easier on first start up of the day.