Joined mar 30, 2005 messages 5,498 location shakopee, minnesota. The sensor output frequency for 100% gasoline 50 hz for the gm sensor. Apr 02, 2007 the fuel composition sensor fcs, also known as the flex fuel sensor, measures the ethanol to gasoline ratio of the fuel in the fuel line to the injectors. Miata e85 flex fuel sensor wiring and setup youtube. To enable this, turn off launch control and go to fuel settings fuel sensor settings. The cars running the flex fuels have a sensor to monitor this change. I bought another old ford flex fuel sensor, installed it same result, fuel composition reads 1% and defaults to full ethanol correction. The flex fuel sensor gm feeds a 05 volt signal back to the ecu to tell it how much ethanol it has in it. The input used on a megasquirt must be a digital input. Change fuel and spark maps on the fly for different fuels, nitrous activation, etc.
Input for flex fuel sensor canbus connector allows interconnection of other megasquirtcompatible devices for additional functions such as egt input, automatic transmission controller, additional sensorsthe possibilities are. Use the trim pot to adjust a number of trims, including ignition timing, fuel, boost, etc. The fuelling correction at the low frequency, with gm sensors this is for pure. Megasquirt support forum msextra continental flex fuel. Megasquirt pnp gen2 for 9000 miata track dog racing. I know that im getting 12v to the sensor, and ground is fine. If you dont have a sensor, well, i wouldnt do that on my car.
From what i have gather thus far is this is a sensor that is in direct contact with your fuel. Information about ethanol content can be utilized by the ecumaster emu to adjust the fuel dose, ignition advance, or boost pressure. Change fuel and spark maps on the fly for different fuels, maximum power, maximum economy, nitrous activation, etc. Simply put, it allows multiple aemnet enabled devices to easily communicate with each other through a single cable, eliminating the need to connect multiple devices analog outputs to another devices analog inputs on a wiring harness. Possible can guage ability, and the flawless ability to use the gm flex fuel sensor to adjust the tune on the fly. Main fuel table part 9 of the the megasquirt training course walks you through the main fuel table, editing and common fuel tuning strategies within the tunerstudio software. The fuel composition sensor fcs, also known as the flex fuel sensor, measures the ethanol to gasoline ratio of the fuel in the fuel line to the injectors. Nissan silvia s sr20det 19891994 mspnp gen2 plug and play ecu.
Flex fuel interestmegasquirt iiims3x honda d series forum. The signal wire has continuity all the way back to the ecu. Megasquirt training course starts with the basics of downloading and installing the tunerstudio software. Megasquirt pnp gen2 manual megasquirtpnp by diyautotune. After a little street tuning for the previous injector install, everything check out. Flex fuel is where you can set up your gm style flex fuel sensor for use with megasquirtii v2. The fuel sensor signal is a squarewave voltage signal. Instead of launch control, the launch control input pin of the option connector may be connected to a gm flex fuel sensor. Once wired up the sensor can be enabled in megasquirt by navigating to the fuel sensor settings flex menu and enabling the input. Boost monkey e85 flex fuel sensor connector pigtail plastic. A better method would be to create a map tuned with unleaded, and another with straight e85, and use a table to interpolate the two maps based on e% content. Flex fuel is where you can set up your gm style flex fuel sensor for use with megasquirt ii v2. Megasquirt mustang plug and play gen 2 ecu tuner kit 94.
The sensor monitors the concentration of ethanol in the fuel and allows you to change your. Jan 18, 2008 oopsguess i should read the entire scoop first they need to drop the flex fuel sensor replicator tag line. E85 fuel flex comp sensor with s300 honda d series forum. Basically take what would be the flex fuel sensor and replace it with the temp sensor and then see if the correction factors can be changed in the megasquirt software to use that information. Flexible fuel vehicles use a sensor to determine the percentage of ethanol in the fuel mix which varies not only with the season and location, but also with the.
Enable flex fuel and set the sensor port to launch formerly flex. You could put in e85 one day, run it to a half a tank and then fill the rest with premium fuel and run on the same map. Part 9 of the the megasquirt training course walks you through the main fuel table, editing and common fuel tuning strategies within the tunerstudio software. Before electronic fuel injection, the temperature sensors were used mostly to drive. The megasquirt ecu is a popular choice for enthusiasts across the world, however getting familiar with the tunerstudio software can take some time. As much as i love ethanol, i wont be making the switch until there is a stock ecucontrolled solution. Click the button below to add the flex fuel sensor to your wish list. Part 25 of the the megasquirt training course walks you through the ms3 specific firmwaresoftware relating to the fuel settings. In this webinar well discuss the software and look at some tips and tricks to get the best out of your tuning session. Ms3 flex fuel install the first thing you will want to do is enable flex fuel, under fuel flex sensor settings tab, it will look like this note this is the settings for the chevy style sensor with temp and content hz being 50150, look below to see the difference.
Input for flex fuel sensor switch between e85 and gasoline on the fly. Flex fuel cars need to run this sensor because in minnesota the fuel changes between e85 and e70 in the winter. For more information, see the microsquirt maf guide at the microsquirt. Gm flex fuel sensor e85 parts department planet e85. Megasquirt and e85 on the fly posted by jrcrxhf, apr 2, 2007. Flex fuel with megasquirt controller many megasquirters have expressed an interest in having megasquirt control flexible fuel vehicles, typically e85gasoline engines. Input for flex fuel sensor canbus connector allows interconnection of other megasquirt compatible devices for additional functions such as egt input, automatic transmission controller, additional sensorsthe possibilities are. A laptop or tuning computer to run the included tunerstudio ms software.
Flexible fuel vehicles can be operated with a blend of ethanol and gasoline, up to 85 percent ethanol. To optimize the ignition timing and the fuel injection amount, the megasquirt requires information about the percentage of ethanol in the fuel. Fyi, the syvecs ecu can control port injection kits and flex fuel out of the box. Injection per engine cycle this is the number of times per engine cycle 2 revolutions for a 4stroke cycle engine, one revolution for a 2stroke cycle engine that megasquirt will fire the injectors. Ive seen the ford one but i am not sure the specs on it compared to the gm ones.
Idk if the ecu has any spare outputs to be used to control a port injection kit. This means that it is a resistor whose resistance decreases as its temperature goes up. We finish the e85 flex fuel sensor wiring and setup in the ecu software tunerstudio. Before electronic fuel injection, the temperature sensors were used mostly to drive gauges or idiot lights, rather than control the engine. Basic functions such as fuel, ignition and idle programming are covered as well as more advanced features such as antilag, rev limiters, traction control, closed. You uses either a stepper type iac, or a fidle onoff or pwm style idle valve. Our gold box plug and play systems have become very popular, but many of our customers are requesting a universal system. Holley, fast, megasquirt, accel, have all been used for years with great success.
Nissan silvia s sr20det 19891994 mspnp gen2 plug and. The low frequency represents the sensor output with pure gasoline, and the high frequency represents. Now im wondering about the flex fuel circuit and if something needs to change there. Input for flex fuel sensorswitch between e85 and gasoline on the fly can bus connector works with megasquirtcompatible devices to add functions like egt input, automatic transmission controller, and additional sensors supports most aftermarket wideband sensors tuning software and documentation usb stick included. Diy autotune megasquirt engine management systems now. Multiple fuel temp sensors possible with megasquirt. So say you go to the pump and it actually has a content of 72% instead of 85% then the ecu can take that number and change the fuel energy constant in the fast xfi ecu to change the stoichiometric fuel air ratio for the fuel being used compared to gasoline. Megasquirtii including microsquirt is the first aftermarket efi controller with direct flexfuel support for experimental only testing of ethanol fuels and blends environmental protection agency epa laws in the usa.
This is why i have researched about the e85 fuel flex compenation sensors. The universal ms3 gold box is a powerful, feature packed engine management system that the budget minded enthusiast has been waiting for. The ms3 gold box is a powerful, feature packed engine management system that the budget minded enthusiast has been waiting for. Flex fuel sensor installation efi tuning questions and. It is has an easy to use software layout, excellent instructions. Harness is an entrylevel, fully assembled ecu and universal 8 pigtail with varied applications targeting power sports, single cylinder all the way up to 8 cylinders with up to 2 fuel and 4 spark outputs. After a little street tuning for the previous injector install.
I am biased towards the holley, although there is no flex fuel, you do get boost control as well as the ability to use the dis ignition. Megasquirtii including microsquirt is the first aftermarket efi controller with direct flexfuel support for experimental only testing of ethanol fuels and blends. Do not rely on the ini that comes with your tuning software, even if it has the. According to aem flex fuel sensor which looks exactly the same specs they use the same frequency and pw specs that are default on tunerstudio. Multiple fueltemp sensors possible with megasquirt. Megasquirt master training course evans performance academy. Help in picking a standalone system efi tuning questions. Ford flex fuel sensor which outputs a varying frequency signal.
The fuel sensor uses a microprocessor to measure the ethanol percentage and fuel temperature, which it uses to produce and output signal. Flex fuel sensor, ethanol content, 6 an male threads. Hey guys, andre from high performance academy here, welcome to another one. Features engine management software supports speed density, alphan tps based, or maf based fuel and spark tables.
The following experiment page activation is not fully supported in the firmware. If not could the megasquirt be reprogrammed to use them. Knock sensor input with adjustable sensitivity, crank angle windowing, and more. Now they can harness the awesome power of the gold box for applications we. The frequency numbers are set up for a stock gm or ford taurus fuel composition sensor. The coolant temperature sensor must be a negative temperature coefficient ntc thermistor. The sensor has a 0 5 v output and reacts to when it sees a e85 fuel mixture.
Basic functions such as fuel, ignition and idle programming are covered as well as more advanced features such as antilag, rev limiters, traction control, closed loop pid control, boost control, and much more. Megasquirt mustang plug and play gen 2 ecu tuner kit 9495 5. The input pin used for the sensor input needs to be chosen and the temperature input can also be enabled by choosing flex fuel. Megasquirt training course evans performance academy. Canbus connector allows interconnection of other megasquirtcompatible devices for additional functions egt input, automatic transmission controller, additional sensors. Dec 18, 2018 we finish the e85 flex fuel sensor wiring and setup in the ecu software tunerstudio. This is the output for controlling an onoff style fidle or a pwm style iac usually found on fords. Flex fuel sensor, ethanol content, 6 an male threads inletoutlet, kit. I dont need the oem software, as long as i have the sensor i can do what i want with it. I was going to purchase the haltech flex fuel sensor to use with my haltech ps, but through some searching found that they are just rebranding an oem sensor and marking the price up. Flex fuel sensor a flexfuel sensor measures the ethanol content of the fuel as it passes through the fuel system.
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