1980-'96 Bronco Tech
Howdy y’all,
I just did the 6 liter tune up on my 96 351. I did not do the timing advance yet however. I gapped the new plugs to .54 and I am noticing a loss of about 2mpg from what I was getting before and not much of a noticeable increase in performance. Idle is fine, engine is running fine...