mazdafvr
+1y
they are pretty damn close. however im sure thers a few small differences. but theres all kinds of reasons for stumbling, jerking and such. i just cleand out all air valves and egr valve, and reed valves then i unplugged the one computer harness closest to the passenger seat. i left the other one in because it made it run kinda funny and i never took the time to try and tune it with it completely unplugged. but it eliminated the need to rerout vacume lines. of course the only tuning u can do is the fuel/air screw. u gotta knock the tamper pin out. u could try backing that screw out just a lil to c if the rpms increase and smooth out. my screw was all the way in and wouldnt let my motor breath. soon as i backed it out, sombitch came to life. lol then i ordered a weber. havent installed it yet tho.