Megasquirt tricks for tuning engine states so i thought id go ahead and. All software based features of the ms1extra firmware are therefore enabled. If overrun fuel cut fails to engage, check the throttle closed tps. Another use for the microsquirt is to run the io box firmware. Im running a megasquirt ecu by the way and fuel is set to cut on overrun after a 2 second delay. Overrun fuel cut and declaration fuel cut off for megasquirt and. Overrun fuel cut was on, but have since removed it. The over run settings tell the megasquirt when fuel should be cut during over run. Try adjusting the overrun fuel cut to be less aggressive, or turn it off altogether. On a soft cut limiter the timing is retarded to the point that the motor can no.
I had a quick question about how to set this up and a few of the settings. This is the ultimate in control, using the ms3 setup, it has vvt control and sd card logging, providing a true plugnplay ecu. Megasquirt is an affordable, standalone, mappable engine management system that can control the fuel and ignition on virtually any liquid fueled. Then it snowed and i never had a chance to test it.
Tunerstudioms is the software application that is used to tune your megasquirt efi controller. Actually a megasquirt has to be the easiestcheapest ecu replacement ive come across. Megasquirt is not amywhere near fast enough for common rail diesel because fuel needs to be precisely injected at exact point btdc. One is called a soft cut rev limiter and a hard cut rev limiter. Time based access tpsdot and ms pulse width sign in to follow this. Time based access tpsdot and ms pulse width megasquirt.
I dont have to worry about damaging stuff while i tune the pid settings, or if there is a wastegate or solenoid malfunction someday. Megasquirtpnp plugnplay standalone engine management systems by. Sure but you dont want overrun to come on instantly, its more of a fuel cut during engine breaking or long coast times. The fuel dump by itself doesnt cause the pops, i guess because its not hot enough to ignite.
Is200 1gfe standalone ecu, fully programmable ecu, knock. Select and assemble your fuel and ignition systems. If you want to use the knock sensing you will need to change the knock sensors with bosch 2 pin knock sensors. You could turn off overrun fuel cut too, at least thats what ive done. Megasquirt support forum msextra over run fuel cut set up. First startup running fuel injection was last weekend. I quickly show them and talk through what they mean. Instead of cutting off the fuel above a certain engine speed and turning it back on immediately below that speed, i think the feature would benefit from having a sort of buffer zone. Jan 17, 2019 sure but you dont want overrun to come on instantly, its more of a fuel cut during engine breaking or long coast times. I did that from essentially day one so no day and night comparison. Megasquirt was designed by bruce bowling and al grippo in 2001. The injectors arent cut, i have an overrun fuel cut delay of 2 seconds, so they cut off 2 seconds after getting off the throttle.
I choose megasquirt as it met all of these criteria. This article will focus specifically on how to tune an efi installation on your 2002. The software gives you an easy way to filter what specific conditions you want to be met for autotune to be active. If theyre twice as big as stock for instance, youll want to cut the pw commanded in half. Speed limiter for pit lane, reduces engine power by spark retardcut or fuel cut. The latest version for windows, linux, and macintosh can be found at megalogviewer is the software application used to view datalogs.
I have mine set at greater than rpm 1 and return fuel when rpm less than 1299 and it functions flawlessly. And even with the injectors cut, there could still be tiny bits of fuel leftover. How to 2 set up step rev limiter 2step tuning launch control. It also depends on the rpm your engine idles at, mine idles at 750 rpm. The two settings you will likely tweak are the kpa and tps activation points. Full details of each step are provided within the body of the manual.
This has allowed me to enable overrun fuel cut for the first time, so that under certain conditions the ecu will shutdown the injectors just. Megasquirt tbi enrichment tuning posted in engine and performance mods. Its certainly the cheapest, posts on from peter webb proved its achievable as an ljet ecu swap, the tuning software for ms is very intuitive and it looked like i knew enough to complete the project. May 07, 2017 overrun this is the high vacuum area at the very bottom of the table 2030kpa when the throttle is closed for deceleration. Megasquirt tuning videos what would you like to see. Rev the car up to maybe 40005000rpm and then let off the throttle. Retard timing on overrun to induce exhaust popping. New jersey kindly gave us the rover fuel injection system. Apr 28, 2019 so i switched to enhancing my summer dd, which is a miata running megasquirt. Initial release will be running ms1extra firmware version 029y4. If you still have any questions then i can answer them due to my experience with the actual firmware the ecus run and with the years of experience i have. When i set it to 1 squirt simultaniously, afr stays spot on, so i figured the opening time was ok. Megasquirt is the premier doityourself efi controller.
This is the complete kit with a gt2860rs turbo, all the exhaust pipework including the manifold, downpipe and decat. This engine management system allows for tremendous flexibility and can handle any custom engine set up from na to turbo supercharged combinations this plug in unit is up to the task. Our world class customer service team can help you find the best ecu and. The aluminum fuel tank has baffles and a builtin antisurge reservoir. I am having a drama trying to find out which wire is the input to the fuel pump relay. Megasquirt tbi enrichment tuning engine and performance. On a soft cut limiter the timing is retarded to the point that the motor can no longer rev higher. A rev limiter works by either retarding the timing or cutting the fuel to the motors cylinders. On petrol sequential injection timing need only be done on the correct stroke and even then only at lowmid rpm. Found it very daunting at first but like nige said earlier, the amount of new information that suddenly starts to make sense and relates to each other is fantastic, and i find myself looking for things on the laptop screen like an expert who by the way has only fitted it 10 days ago, and. Megasquirt is a generalpurpose aftermarket electronic fuel injection efi controller designed to be used with a wide range of sparkignition internal combustion engines i.
The advanced tunerstudio software provides an intuitive, straightforward tuning. The next things to take care of under fuel tuning is acceleration enrichment and overrun fuel cut, stay tuned. If youre a beginner, or an experienced wrench, its a good project to take on. Updated 32816 latest tuningutility software revisions tunerstudioms is the software application that is used to tune your megasquirt efi controller. That can be managed in megasquirt but that is the only software i have any experience. You can also adjust your fuel map to dump tiny bits of fuel on overrun. You are looking to cut fuel when you lift check the accel enrichments settings, what is the decel fuel % set to. Youll find this by going to the fuel settings menu overrun fuel cut. Once you get the solenoid working right, start the closedloop pid settings based on the tips in the megasquirt manuals. Separate target voltages for afterstart, normal operation, over run, and wot. It will focus on megasquirt as the example since that is what i installed on my car and thus am most familiar with, but the general process is still applicable to other type of efi setups note.
Megasquirt3 setting up megasquirt uk official site. Megasquirttunerstudio tips and tricks miata turbo forum. There is a box for highest rpm to reengage fuel and one for lowest rpm to reengage fuel. It includes a base tune file so the car will start and run as soon as you plug in the ecu and connect the map sensor to the manifold. Youll only want to activate fuel cut when the engine has warmed up and only above a certain rpm. I need to connect the megasquirt input to the fuel pump relay so that the relay switches when megasuirt is powered up. Is anyone able to get exhaust pops only by dumping fuel on decel. The windows 9xmexpvista7 software application you use to tune and configure your megasquirt or megasquirtii is either tuner studio by phil tobin or megatune by eric fahlgren. Just added megasquirt to my humble v8, and its thanks to you lads for excellent information and advice. Megasquirt tuning acceleration enrichment loterie romande. If i set it back to how it was kicking in near immediately, is this bad for. At its core, the mspnp mm9697 uses a megasquirt i with the smd board 3 overrun fuel cut cuts off the injectors when you are decelerating, we are most comfortably familiar with as tuning an engine without your. The pump is running at 100% any time the engine is running. On the skylark, i havent noticed anything really picked up since getting the overrun fuel cut feature set up, but thats likely because my fuel table had cuts already programmed into it.
Fuel will not be cut unless the megasquirt is reading kpa and tps position below those points so you will need to pay attention to both when tweaking the overrun. Sep 18, 2015 overrun fuel cut the overrun fuel cut feature will turn off your fuel injectors during overrun when certain conditions are met. Ive got overrun fuel cut disabled, lots of advance in the overrun area and decel fuel amount set to 100 in ae so its not pulling any fuel on deceleration either. Can be based on tps map or blend of both independant of ignition table 12 x 12 ignition table can be based on tps map or blend of both independant of fuel table coolant based rev limiter fuel cut and or round robin spark cut stepper motor idle valve control. The bad is theres no documentation for the software or any of the system. The latest version for windows, linux, and macintosh can be found at.
Veal can do strange things to your fuel table when entering overrun fuel cut, or in very high vac. Quickstart guide in brief this list is provided as the bare essentials that you must read. Dec 04, 2007 im just installing megasquirt into my 89 mk2 8v. Watch the map reading while the engine is decelerating. With the link bmw e36 obdi m50s50 plug in standalone engine management chip tunes are a thing of the past. I use fuel cut to avoid damage to the catalytic converter. Jul 16, 2012 veal can do strange things to your fuel table when entering overrun fuel cut, or in very high vac. I can walk you thru the software and get you setup. The other part is that youre running pig rich at low loads.
It will stay cut with those conditions met down to rpm at which time it will short cycle around rpm. Jan 12, 2016 steves megasquirttunerstudio help thread. Megasquirt lets you set a duration for how long after a throttle closure it waits before triggering overrun fuel cut, so i set timing above 3500 rpm and below 20 kpa map to 15 degrees and set the timer to 1. For instance, only enter overrun mode if rpms are above 1400, but remain in overrun until rpms drop below 0. The megasquirt ecu has all the standard features youve come to expect from myself plus a fan output for optional cooling fan control, a tacho output for your rev counter tacho output only for nondistributor setups and an air temperature sensor to allow the maf to be removed. This is the only standalone plug and play ecu for is200. Megasquirt is an experimental electronic fuel injector controller for. Since the acceleration enrichment is stacked on top of the fuel the ecu is.
Megasquirt support forum msextra over run fuel cut set. Most tuners will refer to rev limiters in two ways. At least in theory, adjustment is neither possible nor necessary. Usually its set to 100% you can try cutting this down to 80% and see if that helps. These kits are put together so you get everything you need to get your engine running in one go. Mazda mx5miata plugnplay megasquirt ecus pnp extraefi. True antilag is incredibly damaging to the turbo, but they retard the timing so far that combustion happens in the manifold and they have fuel and air injectors in the manifold to support that combustion.
Megasquirt tuning is done through an excellent piece of software called tunerstudio and with this you can tune your vetable and warmup automatically. Turned off my overrun fuel cut, decel to 100, ignition to 38 from 7k to 3. Faster and easier tuning with builtin wideband lambda and a builtin mapsensor up to 3 bar 43. Megasquirt support forum msextra overrun fuel cut is. All told after a couple hours of driving there was little left to do to improve it, without a dyno to hand at least. Currently have it set to on with a 2 second delay so it got rid of the harsh transition when coming off throttle, however ive not adjusted the fuel table in overrun and its chucking shitloads of fuel in, i have no idea how much i should need. Overrun fuel cut does cut fuel after about 1 second, at closed throttle, 25 kpa manifold pressure and above rpm. The throttle position sensor is designed to be selfadaptive.
Na miata race car driver from socal 90s mercury villager no start. Building an engine control unit with the stm32f4 hackaday. I have mine set to 15 degrees, but im black box tuning so i cant disable or add a delay to overrun fuel cut so its hard to initiate anyway. I have been trying to tune the accel enrich for a while now and cant seam to get it to work properly. It stopped the 0pw drops, but didnt remove the big miss. Megasquirt diy efi unassembled kits are incredibly well documented, clearly labeled kits where every component is labeled with its component number to let you know where to install it on the pcb, as well as meticulous orientation and installation instructions. Tricks for tuning engine states miata turbo forum boost cars.
Includes kage mx5 turbo kit megasquirt standalone malian catback turbo kit for 1994 to 1998 mazda mx5miata with the 1. Tuning involves setting all the parameters that your microsquirt controller uses to be optimal for your nonpollution controlled engine, injection components, and driving style. Also what kind of deaccel setting are you guys using. Megasquirt megasquirttunerstudio tips and tricks seems like every. Just enter these values under tools calibrate thermo tables in the megatune software. So for 2 seconds after getting off throttle, fuel is still being dumped. Megalogviewer is the software application used to view datalogs.
If you are looking for the lowest cost, rocksolid, fully tunable efi and ignition control solutions available, youve found it. Fuel will not be cut unless the megasquirt is reading kpa and tps position below those points so you will need to. New 38 fuel lines were added to keep the fuel flowing and provide a return line. At its core, the mspnp mm9697 uses a megasquirti with the smd board 3 overrun fuel cut cuts off the injectors when you are decelerating, we are most comfortably familiar with as tuning an engine without your. This made the o2 sensor a bit more responsive and keeps it away from moisture in the exhaust. Steves megasquirttunerstudio help thread mustang forums. The overrun settings i have provided should be good for 99% of applications.
Were dedicated to providing you with the most robust and advanced ecu for your mazda, toyota, nissan, and custom projects. Thats a great way for an amateur to screw up their. I set a filter that says min fuel load must be 30 and min rpm must be 1500. My megasquirt diypnp adventure with my 1997 na mx5 mazda miata. Tuning megasquirt efi and spark part 2 bmw 2002 faq. Ill have a check at lunch and see how the drive home goes. So this is called fuel load in the tunerstudio software. You can set up overrun fuel cut, in the fuel settings during high rpm decel it will just cut all fuel. Turning this feature on will increase your fuel economy as you wont be using any fuel while coasting in gear. That probably accounts for part of the misfires at low throttle cruising. Adaptronic is the leader in aftermarket ecus and accessories. One issue that i constantly ran into was autotune pulling fuel as i entered and exited overrun. So i switched to enhancing my summer dd, which is a miata running megasquirt.
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