mass air?
 

i was wondering how i can tell if i have jus a mass air system or the other. ive been told the mass air is the one to have and the other (what ever the other is) is less desirable to have :banghead:

If you have mass air there will be a mass air sensor right after the air filter. What year is yours?

its an 87,5.0,ho,lx, notch back. and im pretty sure there is no sensor in the intake tube near the filter. tha being said i must have the pain in the ass system on it i guess. :cry2:

Stock vs stock the SD cars are a bit quicker. You can do heads, intake, all the other stuff. Hell i know a few SC & turbo Speed density 5.0s. It can be done. it starts to get tricky when you start playing with the vacume. ie cam swap. There are some nice SD cams out there though.

what is sd? sorry but im new, could you tell? :laughhard

Speed Density - what you have instead of Mass Air.

speed density is arguably the way to go. dollar for dollar spent on mods they are quicker, however there is a limit to them. i haven't come across it and i can run 12s naturally aspitated...with the spray i'm hoping to get close to the 11s :D

well thats good. now i know what the heck i have. :tup thanks guys.

With a speed/density system, the ECM (computer) calculates how much fuel and timing advance is needed based on the speed and density of the incoming air.

With a mass air system the ECM (computer) calculates how much fuel and timing advance is needed based on the mass (weight) of the incoming air.

just my 2 cents....

[QUOTE=AllActionDan]With a speed/density system, the ECM (computer) calculates how much fuel and timing advance is needed based on the speed and density of the incoming air.

With a mass air system the ECM (computer) calculates how much fuel and timing advance is needed based on the mass (weight) of the incoming air.

just my 2 cents....[/QUOTE
]

thanks dan but with the speed density system can i adjust the timing manually or should i leave it alone?

speed density cars respond well to advanced timing. mine likes 16* but you gotta run the good gas or you will get spark knock (i.e. detonation)

and speed density ecms have no way to measure the speed and density of incoming air. there are NO sensors between the air box and the throttle body. what the ecm does is use pre-programmed tables to determine what the injector pulse width should be. that is one reason why they respond so well to bolt-ons versus mass air. as you increase the incoming air volume without calibrating the ecm you are effectively leaning out the mixture. a leaner mixture means more power :tup

thanks dan but with the speed density system can i adjust the timing manually or should i leave it alone?

both mass air and speed/density cars have distributors, so base timing can be
changed. factory timing is 10 deg BTDC. try starting with 13 to 14 deg (using at least 91 octane...94 is a good idea). timing must be set when the engine is at opperating temp...dont forget to unplug the PIP connector. if you dont hear pinging, try one more deg untill you do, then back it off 1 deg...i personally run 18 deg. (DON'T start at 18 deg!!, it may damage your motor). its easy to adjust base timing, do a search on the web, im sure you will find a "how to"...if not let me know, i'll send you an email on how to do it step by step...

why would you unplug the PIP (profile ignition pickup)????? You have ABSOLUTELY no reason to do that!!!!

All you have to do is start the car. Pop the hood. (Loosen the distributer hold down so that you are able to rotate the distributer) Then you have to unplug the the chip from wires hanging down from distributer). Then shining a timing light (a good buy if you don't have one) at the balancer and slowly rotate the distributer until you have advanced the timing to the desired degree.....which will be showing up on the balancer). Then tighten the distribuer down and plug in that chip.

Done and Simple. Have fun playing around with timing :D

thanks stock i will give it a try and tell ya my results :tup

[QUOTE=Stock865.0]why would you unplug the PIP (profile ignition pickup)????? You have ABSOLUTELY no reason to do that!!!!

All you have to do is start the car. Pop the hood. (Loosen the distributer hold down so that you are able to rotate the distributer) Then you have to unplug the the chip from wires hanging down from distributer).





the the chip from wires hanging down from distributer IS the PiP conector.

Isnt that the spout connector?

uhh, no. it isn't lol

i have also seen it called that...good point.
what ever someone/anyone wants to call it, unplug the thing before setting the timing.

it is not "also" called that. they are two distinct things. on the ford dis ignitions system the Crank position sensor (first trace), is used by Ignition module to generate PIP (third trace), which is used by PCM to generate SPOUT (second trace), which is then sent back to ignition module to fire coils. Ignition module is a microprocessor controlled module that decides which coils to fire and when based on signals from CKP and SPOUT. You have to disconnect the SPOUT to adjust timing.....

not trying to be rude....just educational :)

thats how i thought it worked but i didnt want to argue in case i was wrong lol

your right, i looked at some of my wiring diagrams and they are 2 diffrent things. i have been wronglly(spelling?) calling the spout connector a PIP for a very long time now....but it sends a signal to the coil, there is only one...on then new 4.6L they have more then 1 coil (2 coils on the older ones, and one coil perplug on the newer ones)...for some reason only ford/gm calls the ignition system with a distubitor "DIS"...To every other car company DIS means "distributorless ignition", as in NOT having do distibutor. i think ford calls it "coil on plug" now ...1 sparkplug, 1 ignition coil..anyway your right it is called a spout...but i'm still ganna call is a pip :) lol... i think we got side tracked from the orignal question and lost the guy that was asking how to set base timing... :)

um ......call me retarded but im sure i only have 1 coil..........wich i jus changed to a msd blaster 2 coil :) and ya im lost....lol...jk im good im pickin up what u guys are scrapin about :tongue:

if you want to learn more about cars or mustangs pickup "5.0 mustang" or "MM&FF" if they are still around....if you have any buddys into mustangs, see if they have any older issues (the older ones will deal with more 5.0L stuff and not so much with the 4.6L)....if you do pick up something to read, read it! dont just look at the pic's :)

sorry...the "s" is on the end of coil because of bad (mostly drunken) grammer :P

i didn't mean to imply that a 5.0 had more than one coil :laughhard

:laughhard :laughhard :laughhard :laughhard :laughhard