Discussion Starter · #1 ·
I just finished installing my L28 into my 240z, and did not change out the needles, and it seems to me to be running lean, it backfires a little through the carbs when it is going oh, 40mph in 5th gear. (1900rpm???) I think the needles are running a little lean for the bigger displacement, what needles are you guys running??? thanks!