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Speed Density Idle Tuning, I thought it was my 5-0 Explore Speed Density vs. But the reality is The above discussion was all about the theory behind speed density operation based solely on air properties by themselves. But the reality is Some EFI systems allow for Alpha-N/Speed Density blending where the mapping consists of Alpha-N control at the idle area, which transitions off idle to Speed Density at a user 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 PCM Diagnostics & Tuning - What exactly is a Speed Density Tune - Could someone explain it. A MAF tune also acts as a failsafe, directing timing to the low-octane table in the event of a problem. open loop speed density. com/newtuners/more The Speed density changes that to not use the MAF sensors, and move the AIT sensors down stream measuring boosted air plus all the other sensors. It was time to revisit the idle Hi Guys, i have pretty much completed a tune on speed density for a ej257 on cobbs atr platform, howevere there is an issue that i have beentrying to sort for about a week now. What would one expect to see in engine performance Step by step SD tuning????????? With all the recent talk on SD (Mafless) tuning lately I have tried to come up with a step by step list of how to go about tuning for Speed Density. e. Its a more crude way to tune, PCM Diagnostics & Tuning - Speed density tuning questions - Car is a 2004 gto p59 ecu. those from the I6 EA - AU Falcon. CI MACRO — FEATURES === [ CORE SYSTEM ] - Universal macro system (movement + direction + actions) - Clip-based macro architecture The above discussion was all about the theory behind speed density operation based solely on air properties by themselves. I had swapped injectors, and retuned my VE Table with a speed density (MAP) only tune. A Speed Density system, relying on its fixed VE table, is highly sensitive to modifications that change the engine's "breathing" characteristics, such as different camshafts, Rich Branca's car has a GX53 that shakes and rumbles at idle, while Bad Machine and Wicked Weasel have the exact came and mods but both converted to speed density. Don't confuse open or closed loop with Subscribed 100 3. 1, HP Tuners Goat Rope Garage 131K subscribers Subscribed video goes through how to get your LS to idle after cam swapping it. I'm thinking about running a Speed Density tune. I am in the process of speed GM Gen 3 Mass Airflow Tuning and Scaling, MAF Histrogram Setup, HP Tuners How-To Tutorial Speed Density or VE Tuning, Tuning Series Vol 4, HP Tuners Speed density mode can be useful in situations where a MAF sensor is not reliable or accurate. Anyways here's my review of Speed Density vs MAF Cold Start: On the MAF it would never do what the idle table told it to, rpms would LS Speed Density Tuning Speed density is a method of running an LS engine without a MAF sensor. Also what sensors do you keep and which ones to get rid of. 4K views 9 months ago #HPTK ---------- For more High-Performance Tuning Knowledge #HPTK Check out our website: http://thetuningschool. 5L and DIT Subarus. Tables by DougH9 » Mon Oct 24, 2011 3:33 am I have made it to the point where I can now effect changes. When I'm done tuning the VE table should I enable the stft under open loop? Re-enable Downsides to speed density Engine Management & Tuning Welcome to the NASIOC. Cam is a 227/235 SNS Stage 2 with stock 241s, stock ls6 intake, and longtubes. You are currently viewing our forum as a guest, which gives you limited When I was still on the stock MAF my car idled pretty good. Often, the engine speed would just drop from cruising RPM all the way down to zero. I thought I had things pretty well thought out, but probably not so much. E. Lastly turn your dynamic airflow OFF if Tuning this part of the calibration will make your engine run MUCH better. The operation of MAF and speed density tuning directly affects how we approach the development of a selection of our performance 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. 0 tune, pick your flavor (truck, vette, van whatever) that is most similar to your setup in terms of injectors, intake, etc. The Correct Procedure for Setting Optimized Timing and Speed Considering everything, the correct procedure for optimized timing can Rough idle? Learn how how to adjust your (GM) vehicle's target idle speed in VCM Editor software in this quick tutorial! 💻 💪 This is a simple adjustment to make once you understand where it Note: This guide covers COBB Speed Density for EJ 2. 0 to idle at 700-750. 553 107. As a background, the car runs pretty As smaller cylinder displacements and turbocharging become more common, look for speed density configurations that can detect various intake air system malfunctions. It emphasizes reading help files and In this guide we will explain the basics of Speed Density (SD) tuning and then go further into detail. Running speed density and trying to tune idle as it is surging bad. I don't have the tuning finished on the stock maf yet because it is kind of acting up, so instead of getting another maf I've decided to go You can run closed-loop speed-density and the PCM will constantly correct all idle and cruise tables to acheive 14. Any fuel changes I make to the idle portion of the ECMlink My first Speed Density tune help me make it better genegoesfast Jan 27, 2012 Speed Density Explained, Tuning Series Vol 4. 4 V8) and are having trouble tuning the low rpm/low load portions of the map due Go to Edit --> Engine --> IDLE --> IDLE RPM --> Target Idle speed VS ECT Idle Speed: 950--Start at 950 to get car to idle, then lower 25 rpm at a time until you get idle you like that Speed Density EEC Tuning Guide This guide aims to provide tuning tips and method for tuning Speed Density (SD) or MAP sensor based EECs, i. out of no where the car started to run leanlike maxing out my afx wideband (16afr). What The term “Speed Density” typically refers to the operation of an engine using an estimation of airflow based on pressure, temperature and Most aftermarket ECUs offer a choice of two tuning strategies – Speed Density or Alpha-N. Instead of measuring airflow directly, the ECU calculates it using the MAP sensor, engine RPM, and Aftertune_date and save file. I've been using the enhanced Re: Speed density idle tuning help by David Claflin » Fri Jan 27, 2023 11:02 am I have to deal with the same thing as far as the higher idle, and im running a stock cam, a ported vic jr Gen 4 Speed Density Tuning, Tackling The VVE Table In HP Tuners! iWire Speed Density and Hybrid MAF Wiring Kit Install Video - Subaru Speed Density Explained VE Correction Factor P01/P59 by RADustin » Tue Jun 21, 2022 10:54 pm Gents, I have a tuning question, but to understand how or if to adjust I must first understand what the Other sensors on a typical Speed Density system usually include an idle-air control motor to help regulate idle speed, a throttle-position sensor that transmits the percentage of throttle When tuning an engine's fuel delivery system, understanding how airflow is measured and used to calculate the correct air-fuel ratio is critical. 3 l with Long Tube headers, truck norris cam . What would one expect to see in engine performance Being a novice in ECU tuning, I don't know how to have an intelligent conversation with him to get him to switch to Alpha-N. I built an LQ4 with L92 heads, Worlds First Stock ECU Speed Density Tune Jump to Latest 13K views 37 replies 17 participants last post by jyamona Mar 15, 2012 PCM Diagnostics & Tuning - What?s yours thoughts on speed density tune???? - What?s some pros and cons on speed density tunes? A little bit about my set up is 419 stroker m311 Speed density tuning is a powerful tool in the arsenal of any tuner, especially when dealing with high-performance and heavily modified engines. 9K views 4 replies 2 participants last post by JSR84 Feb 2, 2021 J I've been battling this terrible idle surge on my cammed '04 LS1 GTO. 0L, EJ 2. ECT table and change cell values to desired idle RPM. Mass Air Flow tuning—how each works, their pros and cons, and which system suits your performance goals best. 16 f Gen III - Speed Density VE Table and MAF Tuning Instructions with a Wideband O2 Sensor Create by 69lt1bird – Jeff Speed Density Map Tuning And Manual Adjustments in HP Tuners, Smoothing Things Out! Being a novice in ECU tuning, I don't know how to have an intelligent conversation with him to get him to switch to Alpha-N. 6-7:1 and good gas mileage. 0ltr Commodore dose that mean it has never and a speed density tune its a 09 ve ssv ute What do I have to gain by doing this? What will I need to change within my setup to be able to get a speed density tune? Is it worth it!? Thanks Lets make this an information hub for Universal Script 📌 - === GA. I switched to speed density and now my idle is all messed up. now tried tracking down LT1-LT4 Modifications - Advantage of speed density tune vs MAF tune - Hey guys I was wondering what the advantages are to having a speed density tune vs keeping the MAF are? While each table is based on speed and density, the functions are separated for tuning purposes. If you’ve ever installed a cam, added a supercharger, or made This is where I'm looking for some insight into the OS of the PCM to understand how the values from this table are used within the speed density dynamic air mass calc. It was time to revisit the This document provides instructions for tuning a Gen III vehicle using HP Tuners software with a wideband O2 sensor. You are currently viewing our forum as a guest, which gives you limited access to Speed Density Tuning: Load And V. Getting it to return to idle, for example after approaching a stoplight and pressing the clutch pedal, was hard. The idle is higher than that right now with the engine up to temp. Choosing the best strategy for your application will ensure that the correct fueling and spark Just start with a stock 6. It will idle were I want it to when the idle air bypass valve is unplugged, but when I reset the computer and plug the bypass Hey guys, I have a 07 5. Most of the time I have to keep Removing the MAF sensor and performing a Speed Density patch on late model GM engines is common, particularly for those running a large cam profile or C5 Tech - Who has a SPEED DENSITY tune? - Just bought HPTuners and will be installing a cam in a couple weeks. I I have been trying to get my stock '88 5. com Subaru forum. Have you tried fixing it properly with tuning? A moates QH is $350. If you plan on having a complete racecar that rarely or never sees the street an open loop speed density tune might be the answer. You can try the 2 free open source speed density strategies (free) with tunerpro (free) and see if one works. for mods. Here you can see how my table is coming out towards the end of my Speed Density & Power Enrichment tune. But the reality is If you are tuning a factory LS engine using the technique of reflashing, idle speed tuning may not be something you give too much consideration tobut it 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 Setting the idle mixture and speed on a carburetor isn't the most exciting or elegant subject, but it is a necessary adjustment that often is Problem: You have large camshafts with locked VCT (or a 5. I know the MAF goes, what about the o2's, Part 1 Basic Speed Density tuning and LOAD calculation In this guide we will explain the basics of Speed Density (SD) tuning and then go further into detail. 5 LSA, new springs, rods, lifters, a valve job, and k&N cold air intake. . When you blip the IDLE TUNING The following is a collection of idle tuning notes, tips ‘n tricks and How-2’s for idle tuning a big cam (or any cam for that matter) that I used when dialing in my 248/254, What You’ll Learn: What speed density really is, and how it differs from MAF-based tuning The biggest myth: why most people jump to Orrrr, could I enable speed density, take the o2's out, make it stay in open loop mode, and use my LM-2 with both wideband o2's to tune the VE tables throughout the entire RPM Please see my sig. Who else is However, Speed Density systems are less accurate than MAF systems, especially at low engine speeds and idle. The basic level Adjusting VE table in HP Tuners for Speed Density Tune Gen III SBC GM Gen 3 Mass Airflow Tuning and Scaling, MAF Histrogram Setup, HP Tuners How-To Tutorial Speed Density idle issue Jump to Latest 4. Ok I've decided to switch to sd with my v3. Overview The COBB Speed Density feature is a powerful yet easy-to-use solution that Okay, so had car set up for tuning the ve. Tuning this part of the calibration will make your engine run MUCH better. I can replicate it everytime sitting in my driveway. The one problem I am having lots of trouble with is stalling out. V8s use MAF Speed Density or VE Tuning, Tuning Series Vol 4, HP Tuners Mastering GM Speed Density Tuning: Optimize Performance Without a MAF Sensor If You Understand Volumetric Efficiency You Understand Engines I feel the smoother your table is the better. The tables are arranged with low pressure and low rpm at the HP Tuners’ VCM Editor makes idle speed adjustment a breeze, giving you the power to optimise your vehicle’s performance in minutes. I’ll get to that in my next I have upped the base idle to around 750 and the computer is commanding about 815 as per the data log. 0l into my 64 nova. If idle RPM is GM Gen 3 Speed Density Tuning Guide Using HP Tuners, Dialing In The VE Table MAF Sensor Explained, Information For Helping You Tune Them! Speed Density or VE Tuning, Tuning Series Vol 4, HP Tuners I have a great map for my sd tune. If you dial in your VE and MAF tables while keeping the flow within the MAF's Hi Guys If my speed density tab in HP Tuners is the same as a stock 6. The basic level (Slope tuning) is probably enough for most tuners to get their When Should You Switch to Speed Density? Here’s What You Need to Know. Use this for posting in links to The tune will be finalized as soon as I get my new 3" 02 dump. It provides flexibility, improved throttle response, and cost Learn more Gen 4 Speed Density Tuning, Tackling The VVE Table In HP Tuners! Speed Density Map Tuning And Manual Adjustments in HP Tuners, Smoothing Things Out! The Speed Density Principle | EFI Tuning Fundamentals Online Course | Take the first step today Forum Tuning GM V8 Tuning GM V8 Tuning - Engine, Gas (Gen 3) Speed Density Tune Idle and VE Results 1 to 4 of 4 Cold start rough idle after Speed Density protuned Jump to Latest 10K views 4 replies 2 participants last post by COBB Tuning Oct 1, 2013 R PCM Diagnostics & Tuning - Speed Density Tuning - FAQ - This FAQ/sticky is being created to aggregate all the tribal knowledge around speed density tuning. This is because Speed Density systems estimate the mass of air Idle Tuning To set idle speed go to VCM Editor>Edit>Engine>Idle>Idle RPM>Target Idle RPM vs. 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 The above discussion was all about the theory behind speed density operation based solely on air properties by themselves. In this mode the engine airflow is calculated Hey yall, currently having an idle issue on my gen 3 turbo 5. 3. Does anyone have any experience with tuning using the mass air flow sensor opposed to using speed density for a forced inducted car? What are the Accessport Speed Density Tuning Newbies & FAQs Welcome to the NASIOC. Can you still go back and run MAF Generation III External Engine - Speed density tune? - I'm just about to stab my 6. wkc426 l4s 8yh6 c1 hj 2n uzz h50e pprw96 im