Originally Posted by
satoch
I just switched to Byron's 20% Gen2 from Byron's 30% Original on my 3 port Race that had about 1 gallon on it.
It still has a very good pinch but is broken in. I had a hell of a time getting a tune today.
I finally had to remove a .109mm shim. That helped a lot but it still seems to lean bog on the low end and doesn't have the proper snap. Suggestions?
richen hsn, remember rich top lean bottom with go carb. i run., ran a p8 in mine with great results. you want the idle stop at about 1mm and set the hsn a bit rich, set lsn to good long idle (at temp) then lean the top to get max speed. worked for me.