![]() How many customers we can help by adding something is a huge factor in prioritization, as is whether something is needed to tune the car, or just nice to have. A ton goes into selecting the projects that do get worked on and we try to make the best choices we can. Our list is literally over 1000 requests long and it gets trimmed down regularly to remove items we haven't received additional requests for. Doing something always means not doing the other 1000+ things on the feature request list. The reality is like any company we have a certain size staff, which can get a certain amount of work done. We'd love to have products for every car. We'd love to add every feature requested for every platform. Feel free to reference the AF Target you set at a given RPM/Load in your calibration. The Evo X's system is pretty simple in terms of air/fuel target. I understand your personal workflow would benefit from a monitor. Let's start with that and I've not subscribed to this topic so I'll keep tabs. You mentioned launching from a low RPM, but is this a DCT or manual transmission vehicle? If manual, do you have a lightweight flywheel? It sounds like you entered the injector data which is good. ![]() I'd give 900 RPM a shot to make your life easier, then try 850 perhaps later. With the cams you have, idle speed and airflow will need increased for stable idle operation. More on general tuning of the Evo X in the COBB tuning guide: If not, see under what conditions they differ greatly and take a look at your MAF scaling and VE table in those areas to see if there's perhaps some smoothing that can help get the values closer together.Īlternatively, some folks disable MAF based tuning and tune SD only. If so, you're ready to enable all systems. Then disable MAF based, enable SD based tuning, tune the car SD based.Īt that point calculated airflow the MAF Calcs and MAP calcs monitor values should read about the same when you datalog both monitors. tuning for minimal fuel trimming in closed loop and hitting air/fuel targets in open loop. You'd use the principles taught in the HPA lessons i.e. Personally I use the advanced toggles to disable speed density operation, tune the car MAF based. With that in mind, to get the car running well, you really need to dial each one in. Both systems are active at all times and the ECU monitors for large deviation between the airflow calculated between the two. ![]() The Evo X has an interesting airflow calculation strategy involving both MAF and SD (Speed Density) based airflow calculations. ![]()
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