{"id":932,"date":"2024-10-09T17:08:16","date_gmt":"2024-10-09T21:08:16","guid":{"rendered":"https:\/\/www.aquacure-jeffro-dev.linksdev.com\/?post_type=product-resource&p=932"},"modified":"2024-10-15T15:26:58","modified_gmt":"2024-10-15T19:26:58","slug":"do-i-need-a-map-enhancer","status":"publish","type":"product-resource","link":"https:\/\/aquacure-jeffro-dev.linksdev.com\/es\/product-resource\/do-i-need-a-map-enhancer\/","title":{"rendered":"\u00bfNecesito un potenciador de mapa?"},"content":{"rendered":"

I have been led to believe that I NEED a MAP Sensor Enhancer.
\nIf you have a MAP sensor then you NEED a MAP Sensor Enhancer if you want to optimize fuel economy.
\nNot only will a MAP Enhancer \u2018correct\u2019 for manifold air pressure loss if using a fuel saver like the HyCO 2A, it will help the computer correct ignition advance for fuel savers like the HyZor (BG or HHO addition).<\/p>\n

I had read somewhere that a simple\u00a0potentiometer \u00a0needed to be place on the MAP sensor. I cannot find that document for all my trying and cannot remember where I saw it.\u00a0 My MAP sensor has 3 wires.\u00a0 One ground, \u00a0one 5watt power and one that adjusts voltage based on vacuum. \u00a0 Which wire do I attach the potentiometer to?<\/p>\n

It\u2019ll be 5 Volt power (not 5 watt). \u00a0That\u2019s the Power Supply voltage. \u00a0The ground is ground. \u00a0The signal wire (varies voltage) is where you want to apply the potentiometer (usually about 15K ohms). \u00a0You put the pot. in SERIES into the signal wire.<\/p>\n

The MAP sensor is a variable resistor that REDUCES the voltage signal going to the ECU (via the signal wire) by increasing resistance as the vacuum increases (lower absolute pressure). \u00a0Here\u2019s an example chart:
\nhttp:\/\/injector-rehab.com\/shop\/mapsensor.html
\nLower pressure (supposedly) means there is less air (and or lower engine demand for fuel) so the ECU cuts back on fuel (and retards the ignition timing) to compensate.
\nWhat this means to you is that you can \u2018fool\u2019 your ECU into reducing fuel by \u2018modifying\u2019 the voltage signal going to the ECU.
\nMore resistance (in series) lowers the voltage, which lowers the fuel consumption.
\nSo I recommend wiring your potentiometer so that clockwise LOWERS resistance (more fuel) and counter-clockwise INCREASES resistance (less fuel).<\/p>\n

You can buy assembled MAP Enhancers on eBay for cheaper than you can buy the parts, unless you already have them laying about.<\/p>\n

I haven\u2019t seen anything (at Eagle-Research) about a MAP Sensor Enhancer.
\nI do not currently sell a MAP Enhancer because they are being sold on eBay for less than I can build them. \u00a0Usually they are just a 15K variable resistor (for variable voltage MAP sensors).
\nI have a 1989 Ford F-150 4 X 4 with a 302 cu. in. engine. The MAP sensor on a Ford does not send a voltage signal back to the computer but a Digital Frequency Signal. You cannot measure a voltage drop on the signal wire. You can only measure a frequency change.
\nThat\u2019s correct.
\nThe Frequency varies from 100 Hz to 156 Hz at my elevation. I guess it is up to 159 Hz at Sea Level. The way it works is, as the vacuum increases the frequency drops. It varies based upon how many inches of vacuum in the intake manifold. That frequency signal from the MAP Sensor is also calculated and factored in by the computer to regulate how much fuel it pumps through the fuel injectors.
\nThat\u2019s correct.
\nThe truck only has one (1) Oxygen Sensor and I have purchased the kit here for that.
\nThank you\u00a0\"\ud83d\ude42\"
\nDo I need the MAP Sensor Enhancer in addition to the EFIE?
\nYes.
\nThis other place is saying i need both and they have a special one for the Fords that have a digital frequency signal but I don\u2019t think they are adjustable.Their info says they are \u201cset and forget\u201d as it was stated on their site. That doesn\u2019t seem like the optimum solution to me.
\nIt\u2019s not. \u00a0It should be adjustable so that you can balance gains and performance for your vehicle and application.
\nIf I do NEED the MAP Sensor Enhancer is there a way I can send my own digital frequency signal down that line to the computer and bypass the sensor completely?
\nYes you can, but it wouldn\u2019t be wise. \u00a0You\u2019d lose the whole reason the MAP sensor exists, which is to optimize air:fuel ratio and ignition timing \u2018on the fly\u2019 and automatically. \u00a0Best to use a \u2018correction\u2019 circuit.
\nCould I just use a low, VERY LOW frequency generator? That way I could dial in different frequency settings for different driving conditions and circumstances. Does anyone have an idea about how to make this work or if it would work?
\nIt would even help if I could just somehow put a circuit in-line that would raise the frequency by 10 to 15 Hz or more if possible. Any ideas?
\nActually you want to LOWER the frequency because you want the CPU to \u2018see\u2019 a higher vacuum (less pressure) and yes, I have designed such a circuit. \u00a0You put a 15K resistor in the power line (positive feed) leading up to the (frequency based) MAP sensor. \u00a0This lowers the voltage that the sensor is getting and slows down the output frequency. \u00a0But this solution also lowers the MAP sensor output signal voltage which MAY, in some cases, cause the CPU to think that the MAP sensor is bad.
\nSo you add a \u2018voltage pullup\u2019 P-channel MosFet to the circuit, wired thus:1. MosFet Source is connected to the positive wire going to the MAP Enhancer BEFORE the above resistor.2. Signal the MosFet gate with the MAP sensor output signal.\u00a03. MosFet Drain then goes to the CPU (in place of the original MAP Sensor signal).I like this particular MosFet for this application.http:\/\/www.mouser.com\/Search\/Refine.aspx?Keyword=IRFD9014YEAH! problem solved, you now have a simple low cost solution for frequency based MAP sensors.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false},"product-resource-group":[103,104,105,106,107,108,109,110],"restricted-resource-tag":[],"class_list":["post-932","product-resource","type-product-resource","status-publish","hentry","product-resource-group-double-mileage-guaranteed-resources","product-resource-group-efie-resources","product-resource-group-extreme-mileage-101-resources","product-resource-group-hyco-2dt-resources","product-resource-group-hyzor-resources","product-resource-group-super-gas-saver-secrets-resources","product-resource-group-water-as-fuel-resources","product-resource-group-water-injection-resources"],"acf":[],"_links":{"self":[{"href":"https:\/\/aquacure-jeffro-dev.linksdev.com\/es\/wp-json\/wp\/v2\/product-resource\/932","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aquacure-jeffro-dev.linksdev.com\/es\/wp-json\/wp\/v2\/product-resource"}],"about":[{"href":"https:\/\/aquacure-jeffro-dev.linksdev.com\/es\/wp-json\/wp\/v2\/types\/product-resource"}],"wp:attachment":[{"href":"https:\/\/aquacure-jeffro-dev.linksdev.com\/es\/wp-json\/wp\/v2\/media?parent=932"}],"wp:term":[{"taxonomy":"product-resource-group","embeddable":true,"href":"https:\/\/aquacure-jeffro-dev.linksdev.com\/es\/wp-json\/wp\/v2\/product-resource-group?post=932"},{"taxonomy":"restricted-resource-tag","embeddable":true,"href":"https:\/\/aquacure-jeffro-dev.linksdev.com\/es\/wp-json\/wp\/v2\/restricted-resource-tag?post=932"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}