Derf00
1/2 ton status
I can't give a compairson, but can tell you that I am running the Edlebrock MPFI on my 383. It took Edlebrock a couple of trys on the chip to get it right because they didn't list their system for a 383 when it was built. The system has run flawlessly, no matter the angle, bouncing etc., and has produced 15mpg on the hwy w/38's and 5.13's. The system has work well for me.