EBP/MAP SENSOR MOD???

[560TURBO]

Hello fellow strokers, I have a question pertaining to the MAP/EBP sensor mod. First of all is it worth it if you already have a tuner on your truck? If so, are there any ill side effects of doing this mod to your truck? I already have my truck shimmed, 10K mod, tuned on tow mode, straight piped and afe air intake. Thanks in advance.

Brion

[PSDfreak]

not sure what the map sensor mod it, but if you are talking about Gutting the EBPV then the advantage is it will lower your EGTS...Its a little extra restriction that you would be getting rid of...not sure if thats an answer to what you are looking for...

-Casey

[560TURBO]

PSD Freak, I already have my EBPV gutted. I heard a while back that you can take your EBP sensor and wire it into your MAP sensor plug to get a substantial improvement in HP gains and torque. I just want to quantify and veryify the results if it is worth it or not. In reality is supposed to work by fooling your system that it needs more fuel and in all likelyhood, it doesn't.

My future plans are to add a Gen 3 HPOP. I am going to be on Swamps list sooner or later here and also get a fuel system along with stage II injectors and tranny upgrade from flywheel back to rear differential. I've got BFG's coming with 10 ply. That is going to set me back.

[PSDfreak]

If you already have a chip/programmer on the truck, you're gettin all you're gonna get with the stock squirters...Don't waste your time...Just my .02

-Casey

[masami]

Do a search on "The MAP Simulator Mod" developed by Larry S. for more information.

[8012]

Is any one else not able to find it or is it just me?

[kainers]

After wanting more out of the hole torque and having so-so sucsess with the 10K/18K mod i figured i would rig up a circiut that would fool the MAp sensor into thinking the engine was at 18 + psi boost and therfore allow the ECU to jump right to the RICH fuel map, giving me a solution to slow turbo spoll and a lack of under 1500 RPM torque. Well i calcutaled it out and came up with using two resistors in a seris/parallel circuit to replace to map sensor signal. The two resistors i used were a 1.0K ohm and 10.0 k ohm. one end of the 10.0 k resistor was conected to the ground wire( the wire all the way to the right if viewing the map sensor from front of the truck on 2000 models) and the other end was connected to the signal wire (center wire). one end of the 1.0 K resistor was then conected to that same center wire , while the other end was connected to the voltage source wire (wire all the way to the left, 5volts) This gave a 4.22 volt reading accross the sigal wire and ground wire with the key on, which translats to about 21-22 psi boost reading from the MAP. Enough to get the richest fuel map and still not trigger the SES light. I thought for sure this would throw a code when i started the truck and the ECU noticed the truck was idliing and it still had 20+ boost , but to my surprize it didnt, and after driving 50 miles i can say that it really woke the truck up down low, so much that i can now light the tire up just by steping on it from idle speed rolling at 600 RPMS !! IT smokes for about the first 15 feet but as soon as the turbo catches up, ( which happens much faster with this mod) it cleans up almost completely and runs very strong. ALso i beleive because this mod leves the injector timing advanced even when at part throttle the truck seems to cruise earier at 70-75 with about 2-3# less boost then before. this leads me to belive that less fule is being used as thiss results in a lower volume/veolcity of exausde gasses and the lower observed boost numbers. BEcause of this i belive the fuel economy will not be severly hurt by this mod, if at all. And because so little time i spent below 1500 rpms i dont think the advanced timing of the injectors will adverssly afecct the engine. ALso, the truck idles like it always did and throttle response is actually smother becuase you no longer have the rush of power as the boost builds above 1600 RPMS, its very smoth right from the start. IT anyone has any idea or comments on this i would nlike to hear them as i have never heard of someone doing this mod before. thanks Steve

my book says it's analog voltage on 2001 it is scaled out as
1.1 volt 11.5psi
1.5 volt 14.7psi
2.2 volt 20 psi
2.8 volt 25 psi
3.6 volt 30 psi
4.3 volt 35 psi

this is from ford factory manuals

used as smoke control by limiting fuel quantity during acceleration untill specified boost pressure is obtained.
dynamic injection timing- optimizes injection timing for boost pressure measured.
if sensor is detected out of range or incorrect value for conditions pcm will default to programed signal.

so says the book.

i have played with a map sensor before and it is absolute reading so just sitting on the bench it output is around 1.5 volts with nothing but atmosphere pressure. the backpressure sensor is the same way if your interested. as far as how it ties into the system the book dosen't go into control logic so much. i wish it did. "6speedstroke"


this is what I have collected as of info if this is what you are looking for.Superduty stuff but maybe you can make heads tails of it.

Mike