{"product_id":"2017-2023-gm-6-6l-l5p-duramax-transmission-tuning-by-ppei","title":"PPEI Transmission Tuning PP-17-23-L5P-TT | 2017-2026 Duramax 6.6L L5P","description":"\u003ch2\u003ePPEI T87A\/T93 Transmission Tuning for L5P Duramax\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eExtend your L5P Duramax transmission’s life and increase your fuel economy\u003c\/strong\u003e with \u003cstrong\u003ePPEI’s T87A\/T93 Transmission Tuning!\u003c\/strong\u003e A must-have for tuned trucks running additional torque and performance upgrades.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePPEI was the first to offer transmission tuning\u003c\/strong\u003e for the new Allisons — and we haven’t let off the throttle since!\u003c\/p\u003e\n\u003ch3\u003eRefined Shift Points\u003c\/h3\u003e\n\u003cp\u003eThe refined shift points eliminate the low-RPM “lazy” feel that forces the driver to stab the throttle for a downshift — not cool, and a fuel economy killer! For vehicles equipped with larger turbochargers, \u003cstrong\u003ePPEI Transmission Tuning\u003c\/strong\u003e is essential to bring the engine back into the proper RPM range to match the torque curve of the new turbo.\u003c\/p\u003e\n\u003ch3\u003eOptimized Torque Converter Lockup\u003c\/h3\u003e\n\u003cp\u003eAlong with improved shift points, PPEI refines the torque converter lockup strategy to deliver power to the ground more efficiently. This improves fuel economy by eliminating unnecessary slip in the torque converter — which also reduces heat in typical “unlocked” conditions.\u003c\/p\u003e\n\u003ch3\u003eIncreased Line Pressure for Maximum Holding Power\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eLastly (and possibly the greatest benefit)\u003c\/strong\u003e is the increase in line pressure PPEI provides. Higher line pressure increases the holding capacity of the transmission by clamping the clutch packs together with more force. This gives tuned and towing trucks the confidence and durability they need to enjoy their setup for years to come.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e2024 \u0026amp; 2025 Model Support – Global B TCM Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHP Tuners\u003c\/strong\u003e now supports Global B TCMs with the following service numbers: \u003cstrong\u003e24043414, 24043412, and 24294753.\u003c\/strong\u003e You must use one of these TCMs to tune 2024–2025 models, as factory Global B TCMs remain locked.\u003c\/p\u003e\n\u003ch4\u003eInstallation Steps for 2024–2025 Trucks:\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eInstall an HP Tuners unlocked TCM (with one of the service numbers above).\u003c\/li\u003e\n\u003cli\u003eFlash the proper calibration file for your vehicle. (You may need to disconnect and reconnect the batteries to power-cycle the module.)\u003c\/li\u003e\n\u003cli\u003ePerform serial data authentication using the MDI dealer tool.\u003c\/li\u003e\n\u003cli\u003eComplete an MCVM reset following the proper procedure.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eInstallation Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis tuning package can be installed using the following supported hardware:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePPEI HP Tuners MPVI2 \/ MPVI3 \/ MPVI4\u003c\/li\u003e\n\u003cli\u003ePPEI RTD4\u003c\/li\u003e\n\u003cli\u003eEZ LYNK AutoAgent 3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePPEI Transmission Tuning\u003c\/strong\u003e for the L5P Duramax delivers smoother shifts, higher torque capacity, better fuel economy, and unmatched drivability. Whether you’re towing heavy or running high-performance tuning, PPEI’s calibration keeps your Allison cool, strong, and efficient.\u003c\/p\u003e","brand":"PPEI Tuning","offers":[{"title":"Default Title","offer_id":51231855739163,"sku":"PP-17-23-L5P-TT","price":426.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/2020-2023GM6.6LL5PDuramaxT93TCMTuning_800x_50186498-837e-4529-9469-e2a06f512728.webp?v=1765310528","url":"https:\/\/wwmperformance.com\/products\/2017-2023-gm-6-6l-l5p-duramax-transmission-tuning-by-ppei","provider":"WWM Performance","version":"1.0","type":"link"}