An excellent primer by eric brooks from brooks speed. How to determine driveability using hp tuners vcm scanner. Need help high negative ltft poor gas mileage gmtnation. Perform a cylinder contribution test a cylinder contribution or power balance test determines how each individual injector contributes to engine rpm following an injection event. Hey all, i am trying to do an injector balance test on 99 silverado 4. Fic bosch 52 lb 550 cc for ford fuel injector connection. Leaky or sticking injectors can be found with a balance test.
How to tune decapped injectors in hp tuners gen iii pcms. Injector balance test if this is your first visit, be sure to check out the faq by clicking the link above. Cant check injector balance with edge insight dodge. When i find the injectors are firing correctly and electrically sound, the next thing i do is to perform an injector balance test. I hope this clears up exactly what efi live, hp tuners, udc, sniper, or any of the other tuning suites truly are. For example, if the injector is rated at 24 lbhr it means that it will flow 24 pounds of fuel at 43. This is a great added benefit to you as the dpf is known to cause costly breakdowns, lower mpg and significantly reduce. Gm injector balance test snapon diagnostics product forums. Now enhancing these to new heights with a new feature rich vcm editor and vcm scanner, coupled together with the latest generation mpvi2, this is only tuning and diagnostic solution youll ever need for your modern obdii vehicle. For some of the companys more popular applications, the fuel injector clinic team did the heavy lifting and plotted this data for their entire line of injectors, along with the standard flow and offset information, into software and ecuspecific formats. Now with dash command i get balance rates, and fuel rate, but i still cant get fuel rail pressure.
Injector balance testing snapon diagnostics product forums. Gain 1020% more miles per gallon with your diesel truck. Disabling the dpf will allow you to install a dpf delete pipe and eliminate the very costly to fix dpf system. Fuel injector coil balance tester kentmoore j39021. Remember to check hptuners website to ensure your vehicle does not. The diagnostics menu gives you the option to test your injectors to see if they are running correctly. You can also adjust the data set itself if you want to leave the axis labels alone.
You can check your injector balance rates with the edge evolution cs2. Tune your mustang using hp tuners injector dynamics. One test induces a constant current amperage to load the injector coil and test the internal coil windings. How to fix partial throttle knock using hp tuners 3. I posted a rfi at on the questions i have about whether or not this product serial port device and the vcm suite hardware and software serial number have to be reregistered and transferred over to my new account as mrrsm over at the hp tuners web page. If you already have our layouts you wont need to follow the steps in this video. Aug 23, 2016 this great video will show you how to set up and view injector duty cyle using hp tuners 3. For about 50% of the truck owners out there, the generic box tuners work fine. This tool will also read advanced codes and sensors on any ford light duty vehicle from 1995. Bsd ecu flash using woolich mention upper lower injector.
Again be careful, anyone with the tools can load tunes on an autocal and sell them. We want you to have the best experience possible when dealing with us both before and after the. Hp tuners mission statement the mission is to provide the most complete, cost effective tuning and data acquisition solutions for enthusiasts and professional shops. The tabled injector data provided in the excel sheet that you can download by following the link on the right are customized to be used by hp tuners software in. Some modern ecus even come with these test modes onboard to help you diagnose problems quickly and easily without breaking other parts in the process. Hp tuners free lesson understanding gm ignition timing free. You are currently not logged in to a registered account. The fuel injector balancing myth no one can actual.
This can literally save hours of wasted downer time, and we need to thank the hp tuners forum who found this table, as well as the hp tuners engineers for incorporating it so quickly. With hp tuners, you can click on the torque axis of a table and open the labels, allowing you to just divide those labels by 2 and properly adjust the table by 50% shown below. However, the j 39021 has multiple settings to allow for accurate testing of injectors varying resistances. Different engines will have different procedures for performing this test and a vehicle specific auto repair manual is recommended for testing. I noticed on my way back the truck was sluggish and seemed to be lacking power periodically. Only the edge evolution does the injector balance test. If youre using a larger oem injector cobra, lightning, etc. The same thing happens if one fires and it speeds up too much, it can take away. Our support team is available to help users with software issuesconcernsquestions by email only. Plus correct injector latency, full injector data supplied for all gm vehicles in either hp tuners or efi live format. This is especially helpful if you are experiencing an issue with your truck without a dtc.
Open up the unit conversion window found under the tools menu. Is there some sort of indexed value system the rounds to the closest values. By don lasota gm efi tuning guide for hp tuners software. What is the injector balance map 1640 woolich racing. Kpa table open up the unit conversion window found under the tools menu.
What is the injector balance map response the injector balance map controls the split between the lower and upper injectors. If your engine is running fine, cylinder balance is basically useless. Gm efi tuning for beginners posted on december 15, 2014 by scott parker in columns, the science of speed with scott parker 1 comment if youve been around the gm efi scene, whether it is perusing the messageboards, races, car shows, etc. To our knowledge there does not exist a company that can precision drill or redrill the fuel injector outlet holes or regrind the pintle shape to such exacting specs that will allow for precision balancing in both spray pattern and. Bsd ecu flash using woolich mention upper lower injector balance change. Up until the discovery of these compensation tables, the most common technique used by tuners to wrangle in higher flowing injectors was somewhat rudimentary and didnt work very well for streetcars. Jan 16, 2014 for example, if the injector is rated at 24 lbhr it means that it will flow 24 pounds of fuel at 43. Tuning high flowing injectors for low pulse width operation. The edge products 84 insight cts2 delivers unmatched monitoring capability for any obd ii vehicle 1996 or newer.
I realize injectors are prolly in my sometime near future but im gonna see where this ends up in the time being. Return rates is the amount of fuel each injector returns to the tank during a 15 second cranking cycle, and involves a test set with 4 graduated cylinders to perform as well as some engine teardown to perform it. This is a great added benefit to you as the dpf is known to cause costly breakdowns, lower mpg and significantly reduce performance, if youre interested in doing a dpf. Before emailing support make sure you are running the latest version of hp tuners software. You can test your injectors at high rpm and hear if they are having issues, or clean injectors individually while cycling them via the simulator. Would like to see function to do fuel injector balance test. The gm ecuspecific short pulse width compensation and minimum ipw data for fuel injector clinics 2,150 ccmin injector, formatted for hp tuners. I was using torque pro and getting balance rates but couldnt get fuel rail pressure or fuel rate. Join the thousands of powerstroke, duramax, and cummins diesel truck owners. The holley efi injector driver module will have you in complete control of your fuel injected behemoth, featuring easily programmable injector current curves, injector test fire mode, two datalogger outputs, multiple peak. We flow test and balance fuel injectors the flow testing part is correct but the balancing part is a myth. Generally the lower injector is used more at lower rpm and throttle settings, the upper secondary injectors are used more as the throttle opens and the rpm increase. Fast forward a couple weeks i purchased a ae scanner and ran a buzz test and contribution test. Thank you for visiting snapon diagnostics product forums.
A weak injector will not contribute as much as a strong injector and thus engine rpm will decrease after that injector is fired. What is efi live, hp tuners, udc, or other diesel pickup. The other test is a standard injector balance test. Hp tuners starlite diesel custom tuning cummins, duramax. Hp tuners, the home of vcm suite and the mpvi since 2003. How to check the health of each cylinder of your engine. Injector balance test measures how much each cylinder is contributing to power given equal injection rate of fuel. Balance rates are only looking at changes in crankshaft speed as each cylinder fires. For about another 48%, they should be looking at buying some custom tunes already built for them.
I understand with balance rates and efi live the cylinder count starts from closest to fire wall and then out towards the raditor. I think i found 2 or 3 pids for frp but none of them want to work. This is primarily pertaining to gen3 pcms and some e38 gen4 pcms. Introducing the holley efi programmable 8 channel injector driver module.
How to determine which cylinder is misfiring using hp tuners. With hp tuners, inputting the values i got for short pulse adder, the values i paste in are changed to values close but not the same. May 27, 2019 4 if you have access to a tech 2 or high end scanner hp tuners should have this as a feature perform a fuel injector efi balance test. If one fires and the crankshaft doesnt speed up as much as it does after the other 7 fire it will add fuel to the lazy cylinder to make up for it, ie creating a higher balance rate.
As you can see, zero in the offset verses of the injector tip temperature reverses that rich after reflash problem. Fuel injector manufacturers in general send their fuel injectors as balanced sets to the end users such as auto, motorcycle, marine engine etc. Rich after reflash injector tip temperature problem and fix. Typically this test has to be done with a high end scan tool. Some functions of snapon diagnostics product forums will not be available to you if your are not logged in as a registered member. The woolich software gives you more than you need to tune, that much flexibility its crazy. This video will show you how to do a modified power balance test. This test can help isolate clogged, dirty, or inoperative injectors. Fuel injector balancing mean the fuel injector both in spray pattern and in quantity of fuel delivered are even.
This video will show you how to use your hp tuners scanner to determine. Id injector data page 2 holley performance products. It really sucks because i am not throwing any codes yes the truck has a stumble sometimes idling and under load. Dec 15, 2014 by plugging into the obd iii port, hardware and software such as hp tuners can scan, download, and upload. In this video i go over how to input injector data for decapped injectors or even just larger injectors into hp tuners. This can be downloaded at any time from our website. Ford powerstroke diagnostic scan tool auto enginuity sp03. The ultimate solution for methanol burning engines that require a large set of secondary injectors. Join date sep 2002 location chicago, il posts 6,935. In the lower right, enter in your new injector flow rating and the fuel pressure it is rated at. In many cases, injectors purchased from ford racing will include all of this information. Most tuners focus on fuel adjustments to balance egts, but weve learned that this isnt really the entire picture for individual cylinder tuning, and you can learn, to, as soon as you observe the airfuel ratio of each cylinders exhaust. Jul 11, 2017 this video will show you how to do a modified power balance test.
The gm injector balance test appears to more manually involved and not automated start to end like fords relative fuel injector flow test because the gm injectors are individually selected manually and ignition key cycled to off then on to prime the fuel rail back up after manually writing down the pressure drop before selecting the next one, one at a time. The reason is that by disabling the injector for the affected cylinder, youre not causing that cylinder to stop combusting because its already not combusting even when the injector is enabled. The fuel injector balancing myth no one can actual balance. When changing injectors, it is best to have a complete set of test data.
This digital gauge display works well with custom tuning products or as a standalone monitor for total insight on how your vehicle is performing. Jan 21, 2018 hey guys, alright so issue started 6 months ago after a trip back from camping hauling a 4500lb trailer, an oil change and a tune with the hand held i was given when i got the truck. This great video will show you how to set up and view injector duty cyle using hp tuners 3. The best way to increase your diesel trucks fuel mileage is to upgrade with a mpg performance module or duramax tuner. Edge products 84 insight cts2 xtreme diesel performance.