2/27/2024 0 Comments Subaru 6 speed sequential gearboxThis box will accept the load cell voltage and provide a cut based on force and time, therefore it is possible to determine the force at which to cut and the amount of time the cut should be maintained. On many muscle cars in the USA we recommend to clients with OEM - factory ECU’s the “Lingenfelter cut box”. However not all Load Cell based systems require an aftermarket ECU system to provide the cut phase. At PPG we don’t recommend this type of installation, basic cut time can cause power on engagement if the driver misses a shift which will result in damage very quickly. This system is widely used in lower tier racing as it offers a degree of simplicity but stops teams from automation of the gearshift phase. This information allows the calibrator to use this information to decide when and how long to cut the ignition or fuel in the ECU system to allow the torque on the transmission to reduce and allow the change to occur. In its very basic form the load cell method enables the calibrator visibility of when the driver is applying pressure or force to the gear lever. Ideal for Hot Rod and historic carburetor type application where electronics are not wanted. The method has its inherent risks and can allow power on shifts that can destroy the dog rings and put excessive strain on the drivetrain. This is the most basic installation and can yield great performance if the driver has the ability to modulate the throttle on up and down shifts simulating an engine cut. As A company we always encourage end users to use a closed loop installation taking full advantage of any DBW (drive by wire) capability the ECU system may have. The gear lever option has several variations available and calibrators decided based on the ECU systems ability as to what is best suited. Each of these options comes with its benefits and enables the design to be optimised within the boundaries of the OEM installation. The normal operation of the system will be via a solid rod linkage or Series 4 push pull cable. The lever allows very good installation and very smooth gear changes can be calibrated. This is the standard option for sequential gearboxes and allows the driver to operate with a pull for upshift and push for downshift. Overall, there is no general rule to which is stronger, it comes down to application and design, obviously the team at PPG are biased :-) It also has less axial load, so less stress on shafts and casing, so a small gearbox doesn't need as much strengthening with straight cut. Is my ECU OEM with aftermarket software available?ĭo I have access to a local calibrator for my ECU?Ī awesome video from Motive DVD "What the Fast" they take a look at manual & sequential transmissions and explain the different parts of them.Ī helical and straight cut the same size, a helical is generally stronger due to the amount of teeth engaged at one time, it’s just that a straight cut can often be made to fit into a small space so in a small gearbox you can make a stronger gear than factory. Is my ECU mappable and able to provide any gear functions?ĭo I have cable or drive by wire (DBW) throttle?ĭoes my ECU have basic or advanced gear features? How are you going to operate? Lever shift or paddleshift? You will also need to install the components into the gearbox case and for that you many need to seek one of our many experience installers.Įngineers, engine & gearbox mappers calibrators vary in degrees of knowledge on the correct and best practice of programming sequential gear systems. We would like to provide a resource of information to enable a successful installation and calibration to give you years of good service and performance. We are a friendly team here at PPG and we are here to help.įirstly you need to know what your new system is capable off! 99% of the time you will need the help of a expert in ECU calibration. We help explain some key information that will allow you to ask the correct questions and help you understand the best methods for installation into you're project. Hopefully you have now purchased and received your new sequential gear system manufactured in house by Pfitzner Performance Gearbox. We would like to help you understand the various methods in which these systems can be used, installed and integrated into your car.
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