you guys got me thinkin' ..
.. with a stock pulley (you Fox Mustang guys like Ian, Steve, ISLAND LX and Goliath come to mind) at what RPM do you start making boost?
.. when running the 6.5, or a 7", when would you start making boost?
.. the idea of shifting at 6000 rpm horrifies me with a 100K plus motor (I still have picks somewhere of what was left of a Pontiac 400 after powershifting my old '78 TA at 5K, which went on to becoming a 73 Eldorado powered 78TA :o ) . Maybe I just baby it too much, but right now it's my only ride until I move. The Mighty Jeep is gone:( , but so is my wife :D
Maybe a rev limiter is the order of the day?
.. now, time for an idiot check- where are you guys tapping off at to read your boost? I'm running my vac/boost gauge off the vacuum tree by the master cylinder.. WTF am I doing wrong here guys. Humble me please..
Re: BLOWER TIP OF THE DAY
Quote:
Originally posted by TheHawk05
...the worst way you can do it and Ford should be ashamed of themselves for doing it this way. Here's why: Say your pulling over six grand in your blown Stang, you hit the rev limiter. Guess what happens? The fuel shuts down and the motor goes instantly lean.
This info isn't correct. I've been running an eec-tuner on my car, and combing through the eec-tuner archives, since last April, & feel like I have a pretty good handle on things at this point.
Factory rev limiter: at least in the A9x strategies, eec cuts the PIP signal at 6250 rpm, in other words this is an ignition cutoff, not a fuel cutoff. There are also fuel cutoffs in the stock eec programming, which in oem form are set so high up that hopefully you will never hit them! Here is an excerpt from Ford's A9L binary:
PIP 961 # Minimum PIP period (PIP = 6250000/maxRPM)
HALF_FUEL_REV_LIMIT_ON 8000 # Turn on half-fuel rev limit
HALF_FUEL_REV_LIMIT_OFF 7500 # Turn off half-fuel rev limit
NO_FUEL_RPM 7000 # Max RPM (no fuel)
As for cutting all fuel being lean, this is also incorrect. You have to have *some* fuel being injected to be lean! Pure air is just that, pure air - nothing else is there to cause detonation. This is why Ford set it up to cut ignition first, and then cut all fuel. Not sure why they even stuck the half fuel lines in there, since the total ignition and fuel cuts come before this could ever happen. BTW I have set my PIP cutoff at 6k rpm and it works just like the oem cutoff at 6250, which I only ever hit when a crappy floormat caught my throttle pedal. (once!).
Re: Re: BLOWER TIP OF THE DAY
Quote:
Originally posted by fanglemeister
BTW I have set my PIP cutoff at 6k rpm and it works just like the oem cutoff at 6250, which I only ever hit when a crappy floormat caught my throttle pedal. (once!).
Damnit! Now I don't wanna leave my floormat in after reading this! And I just put it back in just yesterday! LoL! I guess the good ol' floor mat is 86'd!