Speed density tune. May 8, 2014 · speed density tune w issues AccessPort.
Speed density tune Apr 14, 2008 · Closed Loop Speed Density vs Open Loop Speed Density Closed Loop will allow your O2's to make fuel adjustments by STFT (Short Term Fuel Trims) - CLSD recommended if your O2's are decent because a heatsoaked IAT in traffic will cause a Lean condition on OLSD. 4 version. 325/325 on 93pump and 369/383 on e85 at 20psi on a mustang dyno. Follow us on Facebook and Instagram @hptuners Visit us at https://www. Bill@HPTuners. You will get a “check engine” light, but the system reverts to the “Speed Density” tune Apr 27, 2018 · Speed Density. Show Printable Version; Aug 18, 2021 · Speed Density and VE-Based Tuning. Im going to be running a 373 stroker ls1 twin turbo and have conflicting opinions over speed density or maf tunning the car is going to be driven on the street and I wish to achieve 900-110 rwhp 96lb injectors with stock ecu and injector driver for low impedence, 3 bar map Apr 6, 2006 · What are the disadvantages of a SD tune? HP Tuners has a 1 bar Speed Density tune enhancement button that writes the PCM and is irreversable. The tuner will also need to literally make a brand whole new VE table and tune it according to the weather that day and over time build a coolant temp and air temp compensation table for the changing seasons. Mar 13, 2014 · Hey guys I'm still pretty wet behind the ears on the LS engine stuff and in the process of piling my parts for my engine swap, but had a couple questions on Speed density tuning? I'm mainly planning on running a custom twin air intake, and the MAF placement may become an issue. It would have me add 110 to my 91 to make 95 octane. We will get to the other SLOPE modifiers in Part 3. A buddy of mine is trying to tell me that removing Dec 31, 2020 · So how is speed density vs MAF different from each other? Do these differences matter? Speed Density. I have never tried to correct this with out live tuning and map tracing, I imagine it’s a Jan 4, 2021 · With speed density the fueling will be based off intake temps, manifold pressure sensor, fuel pressure(and differential). Feb 5, 2019 · Part 2 Tuning Correction Speed Density tuning. Each method has its own approach, strengths, and weaknesses, but speed density tuning is widely considered superior in most Oct 7, 2020 · From 15yrs of other sd tuning experience, it’s lean in the ve map around the area it’s bouncing, usually adding 10% over that whole area will calm it down enough to start dialing it in. Overview. Many aftermarket engine management systems used by enthusiasts, especially in the racing world, use what is called the Speed Density style of calculations, which measures the engine’s speed and the engine’s air density to help the tuner arrive at the proper calibration. removing the MAF bottleneck in the intake really makes the car rip. Jun 21, 2019 · In this thread will be just the basics for setting up a speed density tuning using the most recent software HP Tunes has out. That being 4. Normally, the Mass air flow sensor (MAF) is used to do this job but on setups that draw in large amounts of air, or setups that have things like a rotated turbo-charger or a front mounted intercoolers, using the MAF sensor to calculate air flow isn't always an ideal Apr 22, 2022 · We had a number of questions come in for our Question of the Week about switching from MAF based tuning to Speed Density and I decided to reach out to Harvey from The Boostcreep who has been tuning our cars for well over a decade to get to have a detailed conversation about how these two systems work, and when and why you might want to make the switch to speed density tuning. Apr 3, 2023 · The Speed Density tuning algorithm is by and large the most popular option and is a requirement for any boosted application. Also known as a manifold absolute pressure (MAP) system, the ECU uses air pressure data and engine rpm to determine engine airflow which, in turn, is used to calculate how much fuel to send into the cylinders. Tuning MAF for Speed Density; Page 1 of 3 1 2 3 Last. Something to consider about using Ford’s Speed Density System is that the type of fuel injection system is not equipped with sensors to directly measure airflow, so any significant change to the engine in terms of performance cylinder heads or camshafts will need some touch-up to the tune or programming of the ECU. May 8, 2014 · speed density tune w issues AccessPort. Tuning Flexibility: Speed Density-based ECUs offer flexibility in tuning, allowing adjustments to fuel maps based on calculated air intake data. Speed Density senses “load” which can vary even when at the same throttle position and rpm. Sep 12, 2024 · Speed density systems can handle much higher rev counts than ordinary MAF sensors, which tend to go on holiday when you get up to the realms of 8000-9000rpm – although other variables apply here. Is there a tutorial for SD tuning only? Open Editor > Hit F1 > Search = Speed Density Tuning. Where do find good information to get started with the custom speed density tune I did not see anything in the help file? 12-30-2005 #8. It is applied to the SLOPE calculation after all other calculations on the SLOPE are performed. In this #TechTuesday, our GM Instructor Steve Morgan joins Brett McClelland to give you the 101 of what speed density & open-loop tuning are and which method you should be Go to the Sticky at the top of the GM V8 Engine Tuning - Gas Vehicles (Gen 4) page, and click on the one which says "Read Me!!! Tuning How-To's & General Information" Scroll down and you will see a link which says "Speed Density tuning E38/E67 PCM's" Click on that and it will give you a general idea on how to set up your car for SD tuning. The Tuning Correction (TC) is a multiplier to the SLOPE calculation outlined in Part 1. Main goal is to fix a lean condition and ensuing high STFT (at idle only) running E85. com/ for more informationWelcome to the sixth session of HP Tuners Live Traini Feb 18, 2020 · If you're modifying or tuning General Motors vehicles, then you have heard the terms speed density, open-loop tuning, and standalone harness. Oct 26, 2015 · Personally, I prefer speed density in lb/hr. Thread Tools. The base in the tune is “Speed Density”! If you unplug the MAF sensor your car still runs. Note: This guide covers CCF Speed Density for the Ford EcoBoost engines. It makes tuning so much easier than trying to figure out thing in VE%. Would like to understand how to tune this section. Hello quick question, can I tune my 411 in just Speed Density? Every tutorial I have watched references doing a MAF tune procedure a well? I built my system with out a MAF, however I do retain the capability to install it, if necessary. Seeing if anyone can shed some light on my cars issue 2013 sti Mods Id1300s Aeromotive fuel rails and lines Cobb turbo back Tial 38mm ewg-gs uppipe Tgv deletes 3port bcs Ets fmic Stock turbo Car was tuned 4-22-14. Apr 15, 2021 · Speed Density is a tuning method where the ECU uses information based on manifold pressure and temperature using the MAP sensor and an added IAT sensor to calculate how much air is coming into the engine. hptuners. Tuning involves optimizing fuel delivery and ignition timing for different engine loads, speeds, and operating conditions to achieve desired performance characteristics. ) you can tune the car for speed density by just unplugging the MAF and tuning the VE table(or secondary VE if you have one) and copying your high octane spark table to Feb 9, 2022 · Bump for speed density tips. Unlike other tuning methods like the popular mass air flow (maf) system, which measures the air as it enters the engine, the speed density tuning system is able to determine the Despite what many think, MAF tunes on GM cars from 1998-2006 use a combination of “Speed Density” calculations with the addition of a MAF to fine-tune. Jump to page: Results 1 to 20 of 46 Thread: Tuning MAF for Speed Density. I have seen many running without MAF using a speed density tune. I have taken some screen shots of how you can setup the tune to run in speed density on just about any P01 computer and P59 computer. It is based on the engine’s intake air volume, temperature and manifold pressure. The CCF Speed Density feature is a powerful yet easy-to-use solution that brings simplified Speed Density tuning into the Ford engine control unit (ECU) and can be used to entirely replace the existing factory SD models. Its all there! Janky Monkey Tuning Call or PM for tuning solutions. should i do it? signed,. Can you still go back and run MAF later? i've been running and logging in SD this week and ziggy seems to run fine. Speed density tuning is a method used to tune the air and fuel mixture of an engine. 0+ and then specifically being the 4. pV = nRT Where: p = absolute pressure of the gas (air in this case) V = volume of the gas n = amount of gas R = gas constant T = absolute temperature of the gas Anybody have a speed density tune? The tuner says it would be a simple tune that, along with a fuel tune, could give me up to 100hp over my current 91 tune. Currently I’m running just under 300whp, about 285 so I’d be around 385whp or a little under. Two common strategies employed in gasoline internal combustion engines are speed density tuning and alpha-N tuning. This would come up when the tune was trying to maximize the mpg. Speed density systems work by measuring the pressure inside the manifold through a MAP sensor. What is speed density? Speed density is nothing more than a different method to calculate the amount of air entering the engine. Speed density systems count on air pressure (as opposed to air flow) and engine speed (rpm) to compute fuel delivery. It also keeps track of the temperature of inlet air. Introduction. (Especially the cranking fuel & acceleration enrichment, exponentially easier to tune when the values are in lb/hr using the Base Fuel Table as a reference. Mar 15, 2024 · Speed density operation starts with the basic ideal gas law, which states the following relationship between gas (air) pressure, temperature and volume. Cell 210-954-4985 Wrench turning provided by Dec 14, 2024 · When tuning an engine's fuel delivery system, understanding how airflow is measured and used to calculate the correct air-fuel ratio is critical. The ability to get enough straight piping before the MAF is a challenge. With these data, the car’s engine control unit (ECU) can then calculate how much fuel it needs. hxeds wsvqkcn mbygb ajjfa kwlx texvr tac wnpkmy ixym mur