{"product_id":"weistec-m157-w-4-turbo-upgrade","title":"Weistec M157 W.4 Turbo Upgrade","description":"\u003ctable cellpadding=\"0\" cellspacing=\"0\" id=\"product-details\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eWEISTEC HORSEPOWER\u003c\/td\u003e\n\u003ctd id=\"js-table-hp_after\" data-mce-fragment=\"1\"\u003e1008\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eWEISTEC TORQUE\u003c\/td\u003e\n\u003ctd id=\"js-table-tq_after\" data-mce-fragment=\"1\"\u003e900\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eTURBO TYPE\u003c\/td\u003e\n\u003ctd id=\"js-table-turbotype\" data-mce-fragment=\"1\"\u003eW.4 (COMPLETE REPLACEMENT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eMANUFACTURER\u003c\/td\u003e\n\u003ctd id=\"js-table-Manufacturer\" data-mce-fragment=\"1\"\u003eWEISTEC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eSTREET LEGAL IN ALL THE US STATES\u003c\/td\u003e\n\u003ctd id=\"js-table-streetlegal\" data-mce-fragment=\"1\"\u003eNO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eENGINE FAMILY\u003c\/td\u003e\n\u003ctd id=\"js-table-enginefamily\" data-mce-fragment=\"1\"\u003eM157\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"read-more\" data-mce-fragment=\"1\"\u003e\n\u003ctd colspan=\"2\" data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e* Allow 2-4 weeks for orders to be shipped. Turbochargers are made to order.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"rflex-container\"\u003e\n\u003cdiv\u003e\u003ciframe id=\"501485084\" data-gtm-yt-inspected-11=\"true\" title=\"Weistec M157 W.4 Turbocharger System Overview\" class=\"frame\" src=\"https:\/\/www.youtube.com\/embed\/94YbY9Ump8I?enablejsapi=1\u0026amp;version=3\u0026amp;rel=0\u0026amp;controls=1\u0026amp;playerapiid=ytplayer\u0026amp;modestbranding=1\u0026amp;autohide=1;fs=1\u0026amp;\" loading=\"lazy\" allowfullscreen=\"\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003eM157 W.4 TURBOCHARGERS\u003c\/h2\u003e\n\u003cp\u003eTaking a giant leap ahead of all other available upgrades, the M157 W.4 Turbochargers completely replace the factory units. They are ball bearing, featuring CNC machined billet aluminum compressor wheels capable of flowing 6large amounts of air.\u003cbr\u003e\u003cbr\u003eTo feed these monster turbochargers, completely new intake tubes are included. Weistec Carbon airboxes are an optional upgrade. The Weistec Turbo-Folds provide significantly increased flow of exhaust gasses compared to the stock turbo-fold. The Weistec M157 True Downpipes perfectly mate up to the M157 W.4 Turbochargers to ensure minimal restriction once the exhaust gasses have gone through the turbine.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"flex-container\"\u003e\n\u003cdiv\u003e\n\u003ch2\u003eAN ENGINEERED SOLUTION\u003c\/h2\u003e\n\u003cp\u003eThe W.4 Turbochargers are the most capable production turbochargers available for the M157 engine. When all supporting upgrades are purchased, (supporting upgrades:\u003cspan\u003e\u003ca href=\"https:\/\/www.weistec.com\/anti-surge-valve-water-methanol-injection-system-m157.html\"\u003eM157 ASV\/Water-Methanol Injection System\u003c\/a\u003e\u003c\/span\u003eWeistec True Downpipes and ECU tuning) the W.4 Turbocharger System for the M157is capable of producing 1000+ crank horsepower on 91 octane pump gas. What’s equally impressive is that these numbers are achieved at only 20psi, and 20 psi is only the beginning.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg alt=\"Inside Engine Bay View\" src=\"https:\/\/www.weistec.com\/mm5\/graphics\/00000001\/m\/1\/m157_turbo_upgrade_1_1.jpg\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"rflex-container\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"Rod\" src=\"https:\/\/www.weistec.com\/mm5\/graphics\/00000001\/m\/1\/m157_turbo_upgrade_3_1.jpg\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003eCONTROL = RELIABILITY\u003c\/h2\u003e\n\u003cp\u003eWhile the M157 engine is a very robust engine in factory form, a couple of weak links have been found at extreme power levels. The most common is a bent connecting rod. If the engine is producing a sustained 1000 lb-ft of torque or more, all it takes is one knock event to bend a rod. This was taken into consideration with the ECU tuning for the W.4 Power Package as they can make far more power and torque than a stock M157 engine can handle. With our optional ECU Tune for the W.4 package, boost is controlled and tapered up to the peak of 20psi as RPM’s increase. This creates a broad torque curve that remains under 800 lb-ft (at the wheels) while allowing power to continually increase towards redline, minimizing stress on the rods as well as the rest of the drivetrain. With a fully\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.weistec.com\/weistec-forged-rods-and-pistons-m157.html\"\u003ebuilt M157\u003c\/a\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eand other supporting upgrades, expect to see significantly higher power numbers as the Turbochargers can flow enough air volume for 1400+ crank horsepower!\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"flex-container\"\u003e\n\u003cdiv\u003e\n\u003ch2\u003eKEY FEATURES\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBall Bearing Turbochargers\u003c\/li\u003e\n\u003cli\u003eRemoved Restriction of Stock Turbo-Folds\u003c\/li\u003e\n\u003cli\u003eWeistec M157 Turbo Intake Tubes and Optional Weistec Carbon Airboxes\u003c\/li\u003e\n\u003cli\u003eGreatly Increased HP and Torque capability\u003c\/li\u003e\n\u003cli\u003eCNC Billet Aluminum Compressor Wheel\u003c\/li\u003e\n\u003cli\u003eImproved Airflow\u003c\/li\u003e\n\u003cli\u003eAggressive Exhaust Note\u003c\/li\u003e\n\u003cli\u003e1000+HP Capable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg alt=\"Turbo With Intakes\" src=\"https:\/\/www.weistec.com\/mm5\/graphics\/00000001\/m\/1\/m157_tc_5_1.jpg\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"rflex-container\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"HP and TQ Graph\" src=\"https:\/\/www.weistec.com\/mm5\/graphics\/00000001\/w\/e\/weistec_w4_m157_dyno_1.jpg\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003eADDITIONAL REQUIRED ITEMS FOR PEAK ENGINE PERFORMANCE:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh Flow Downpipe and Exhaust\u003c\/li\u003e\n\u003cli\u003eRacing Spark Plugs\u003c\/li\u003e\n\u003cli\u003eWeistec WMI\/ASV\u003c\/li\u003e\n\u003cli\u003eWeistec W.4 ECU Tune\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNote: \u003c\/span\u003eThis item is considered special order. (See \u003ca href=\"https:\/\/www.weistec.com\/terms\" target=\"_blank\"\u003eTerms and Conditions\u003c\/a\u003e)\u003c\/p\u003e","brand":"Weistec","offers":[{"title":"Yes","offer_id":40421251416167,"sku":"","price":16198.99,"currency_code":"USD","in_stock":true},{"title":"No","offer_id":40421251448935,"sku":"","price":12999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/1716\/6183\/files\/m157_tc_5_1_640x427_29f1577e-40ef-4b6a-b579-e5863060ba2c.jpg?v=1707692227","url":"https:\/\/www.rockfordspeed.com\/products\/weistec-m157-w-4-turbo-upgrade","provider":"Rockford Speed","version":"1.0","type":"link"}