Greetings! Here's a couple of my favorite links!......................Sorry, I'm told I must have 10 posts under my belt before I can post a link (probably an anti-spam measure). Oh well, 9 more to go! :mad2: Anyway, One's a Plethora of Ford EFI/SEFI reference Info (heavy on sensors, individual components, ect.) & the other is a step by step for my favorite Mod. An Ignition system upgrade allowing stretching the stock plug gap by 25% for greater spark kernel exposure & adding additional base timing advance of up to 6 degrees. Increased performance & MPG simultaneously. Around $150-$225 depending on your preferred flavor of parts. Works on any F150 w/ a distributor. My 87' 302 gets 23mpg @ 65mpg. w/ 87 octane Surprising me, cause I haven't even gotten around to a MAF conversion yet & otherwise stock, except a K&N drop in air filter & all fluids are synthetic except coolant which is distilled water/ antifreeze w/ a 180 thermostat. 9 more posts to go!