![]() No substitute for engineering the total system based on airflow, fuel requirements and hardware capacities. The ECM also changes it's tables in response to these attempts to influence the engine power. Up to two MAF Sensors may be used with the. Replaced this back to the smaller stock TB and regained the starting and smoothe drivabilty and torque. The Mass Air Flow (MAF) Sensor provides an input that directly measures the amount of air entering the engine. I have experienced useing a large TB and lost throttle response plus some hesitiation over a long period of time. Then add the throttle position sensor to this yet that is an input to the ECM and contributes to the final fueling results and ignition timing. These parameters should be in somewhat a balance.Īdding a large wot TB area and it's attendent rate of change up to WOT upsets this relationship by skewing the air meter transfer function to the ECM and it's attendent output pulse widths to the injectors. ![]() If the air flow is being measured by an air meter then the TB area vs throttle angle will set the airflow volume and speed thru the air meter. Jim RE: Calculating Throttle Body Airflow CESSNA1 (Mechanical) 22 May 06 17:40Īnother way to look at this is the throttle body is sized for max airflow and rpm of the engine displacement with some tolerence. It sounded suspiciously like a lean condition (potentially damaging) and it went away when he reinstalled the stock throttle body. HouYeen Mass Air Flow Sensor Meter for Transit Mk7 Mondeo S-Max Galaxy Connect A. Not all engines would be susceptible to this for various reasons but I have seen a guy with a 2.5L Jeep have a surge and a stumble at about 3000rpm under a heavy load (hill) when he went from the stock 48mm throttle body to a 60mm unit. HouYeen Mass Airflow MAF Sensor for Ma-zda 2 3 6 CX3 CX5 MX5 Outlander. It is the job of the air filter to keep that. Try to imagine 9,000-10,000 gallons of air flowing through your engine for every 1 gallon of gas burned That much air carries a lot of fine dust and particulates of all types. an X-mm throttle body can flow Y-cfm?Ģ) Is there a way to correlate injector fuel flow to airflow? I have found that the OE puts very little extra fuel flow in stock EFI systems, so if a guy was to install a larger throttle body, it would A) respond as much as it's built in flexibility would allow, B) have zero or negligible effect (related to A), or C) under load possibly cause a lean condition when the injectors run out of flow ewhen the engine has plenty of air. Since the function of an MAF is to measure all the air flowing into the engine, they have a LOT of air flowing through them. Once the air flow mass is calculated, the sensor sends this information to the engine control module. II Trouble Code: Mass Airflow Sensor Out of Self >P1101 OBD. How a Mass Air Flow Sensor Works When air from the outside enters the engine, the mass air flow sensor detects the mass of this air. Your consent can be revoked at any time in our footer via the cookie settings.1) Has anyone run across a formula for calulating airflow through an EFI throttle body, e.g. The Oil Pump Control Valve / Solenoid or the oil pressure sensor. By clicking on ""Refuse all cookies"" you refuse this. ![]() By clicking on ""Allow all cookies"", you expressly consent to the access to and storage of information in your computer or mobile device, the processing of your personal data, and the transfer of your data to third countries for the above-mentioned purposes. ![]() If data is transferred to third countries, there is a risk that authorities may access and evaluate this data and that your data subject rights may not be enforced. In the process, data is also passed on to service providers. If you give us your consent for this, we process your information and data for the integration of external content/media, for usage analysis and related statistical purposes, for personalising our offers, for displaying personalised advertising, and for evaluating our advertising campaigns. On our website, we use cookies and other comparable technologies with which we read/store information on your computer or mobile device and process personal data that is necessary, among other things, for the operation of our website.
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