# Edelbrock Pro Flo 4 XT EFI System Seq Port LS Gen III/IV Cathedral Port 550 HP Max 35lb/hr Black The Edelbrock part #35733 Pro-Flo 4 XT Sequential Port EFI System for Chevrolet LS GEN III/IV engines is equipped with the latest in technology and features. The EFI system comes complete with a Pro-Flo XT cathedral port black finish intake manifold and 35 Lb/Hr injectors capable of 550 HP with 58 p.s.i. fuel pressure. The new Pro-Flo 4 EFI systems feature an all-new ECU with a faster processor, a water proof design and measures half the depth of the previous ECU. It also has an upgraded Bluetooth chip that is faster, more reliable and will not drop connection. We've added more features for the advanced tuner giving you control over air-fuel ratios, ignition curve, idle speed, acceleration fuel, coolant fans, Rev limiter while retaining the simplicity Pro-Flo is known for. The key to the system is our exclusive E-Tuner 4 app with dyno developed base calibrations. The E-Tuner 4 app uses a Bluetooth wireless connection to communicate with the ECU's self-learning capability to continually adjust the calibration to get the maximize performance of your engine. E-Tuner 4 features a simple and easy to use setup wizard to help you get started. Best of all, the E-Tuner 4 app is free and can be downloaded from the Google Play Store, allowing you to use your personal Android based smart phone or tablet. If you don't have a compatible device, then we also offer kits that include a 7" Android tablet with the E-Tuner 4 app pre-installed.Multiple dash displays are included to allow you to monitor engine vitals and performance from your Android smart phone or tablet.Pro-Flo 4 does not require laptop tuning. - New ECU Preloaded w/80 Dyno-Tuned Calibrations This Part Fits: Year Make Model Submodel 2013 Chevrolet Avalanche Black Diamond LS 2013 Chevrolet Avalanche Black Diamond LT 2013 Chevrolet Avalanche Black Diamond LTZ 2007-2012 Chevrolet Avalanche LS 2007-2012 Chevrolet Avalanche LT 2007-2012 Chevrolet Avalanche LTZ 2002-2005 Chevrolet Avalanche 1500 Base 2005-2006 Chevrolet Avalanche 1500 LS 2005-2006 Chevrolet Avalanche 1500 LT 2002-2003 Chevrolet Avalanche 1500 North Face 2002-2003 Chevrolet Avalanche 1500 On Road Edition 2003 Chevrolet Avalanche 1500 WBH 2004-2006 Chevrolet Avalanche 1500 Z66 2002-2006 Chevrolet Avalanche 1500 Z71 1993 Chevrolet Camaro Indianapolis 500 Pace Car 2010-2015,2017-2019 Chevrolet Camaro SS 2014-2015 Chevrolet Camaro Z/28 1993,1997 Chevrolet Camaro Z28 2012-2015,2017-2019 Chevrolet Camaro ZL1 2009-2012 Chevrolet Colorado LT 1994 Chevrolet Commercial Chassis Base 1993 Chevrolet Corvette 40th Anniversary Edition 2013 Chevrolet Corvette 427 2008 Chevrolet Corvette 427 Limited Edition Z06 2003 Chevrolet Corvette 50th Anniversary Edition 2003 Chevrolet Corvette 50th Anniversary Edition Pace Car 1992-1994,2001-2013 Chevrolet Corvette Base 2010-2013,2017-2019 Chevrolet Corvette Grand Sport 2015-2019 Chevrolet Corvette Stingray 2001-2004,2006-2013,2015-2019 Chevrolet Corvette Z06 2011 Chevrolet Corvette Z06 Carbon 2009-2013,2019 Chevrolet Corvette ZR1 2003-2014 Chevrolet Express 1500 Base 2003-2014 Chevrolet Express 1500 LS 2006-2014 Chevrolet Express 1500 LT 2003-2019 Chevrolet Express 2500 Base 2003-2019 Chevrolet Express 2500 LS 2006-2019 Chevrolet Express 2500 LT 2003-2019 Chevrolet Express 3500 Base 2003-2019 Chevrolet Express 3500 LS 2006-2019 Chevrolet Express 3500 LT 2006-2009 Chevrolet Impala SS 2006-2007 Chevrolet Monte Carlo SS 1999-2005 Chevrolet Silverado 1500 Base 2004-2006,2009-2013 Chevrolet Silverado 1500 Hybrid 1999-2013 Chevrolet Silverado 1500 LS 1999-2013 Chevrolet Silverado 1500 LT 2007-2013 Chevrolet Silverado 1500 LTZ 2003-2006 Chevrolet Silverado 1500 SS 2002-2013 Chevrolet Silverado 1500 WT 2010-2013 Chevrolet Silverado 1500 XFE 2004-2005 Chevrolet Silverado 1500 Z71 Off-Road 2007 Chevrolet Silverado 1500 Classic Hybrid 2007 Chevrolet Silverado 1500 Classic LS 2007 Chevrolet Silverado 1500 Classic LT 2007 Chevrolet Silverado 1500 Classic SS 2007 Chevrolet Silverado 1500 Classic WT 2005 Chevrolet Silverado 1500 HD Base 2001-2003,2005 Chevrolet Silverado 1500 HD LS 2001-2003,2005-2006 Chevrolet Silverado 1500 HD LT 2007 Chevrolet Silverado 1500 HD Classic LT 1999-2004 Chevrolet Silverado 2500 Base 1999-2004 Chevrolet Silverado 2500 LS 1999-2004 Chevrolet Silverado 2500 LT 2004 Chevrolet Silverado 2500 WT 2001-2005 Chevrolet Silverado 2500 HD Base 2015-2019 Chevrolet Silverado 2500 HD High Country 2001-2006 Chevrolet Silverado 2500 HD LS 2001-2019 Chevrolet Silverado 2500 HD LT 2007-2019 Chevrolet Silverado 2500 HD LTZ 2003-2019 Chevrolet Silverado 2500 HD WT 2007 Chevrolet Silverado 2500 HD Classic LS 2007 Chevrolet Silverado 2500 HD Classic LT 2007 Chevrolet Silverado 2500 HD Classic WT 2001-2005 Chevrolet Silverado 3500 Base 2001-2006 Chevrolet Silverado 3500 LS 2001-2006 Chevrolet Silverado 3500 LT 2004,2006 Chevrolet Silverado 3500 WT 2007 Chevrolet Silverado 3500 Classic LS 2007 Chevrolet Silverado 3500 Classic LT 2007 Chevrolet Silverado 3500 Classic WT 2015-2019 Chevrolet Silverado 3500 HD High Country 2007-2019 Chevrolet Silverado 3500 HD LT 2007-2019 Chevrolet Silverado 3500 HD LTZ 2007-2019 Chevrolet Silverado 3500 HD WT 2014-2017 Chevrolet SS Base 2003-2006 Chevrolet SSR Base 2000-2001,2006 Chevrolet Suburban 1500 Base 2000-2014 Chevrolet Suburban 1500 LS 2000-2014 Chevrolet Suburban 1500 LT 2006-2014 Chevrolet Suburban 1500 LTZ 2002-2006 Chevrolet Suburban 1500 Z71 2000-2001 Chevrolet Suburban 2500 Base 2000-2013 Chevrolet Suburban 2500 LS 2000-2013 Chevrolet Suburban 2500 LT 2007 Chevrolet Suburban 2500 LTZ 2016-2019 Chevrolet Suburban 3500 HD LS 2016-2019 Chevrolet Suburban 3500 HD LT 2000-2001,2006 Chevrolet Tahoe Base 2010-2013 Chevrolet Tahoe Hybrid 2000-2014 Chevrolet Tahoe LS 2000-2014 Chevrolet Tahoe LT 2007-2014 Chevrolet Tahoe LTZ 2012-2014 Chevrolet Tahoe PPV 2012-2014 Chevrolet Tahoe SSV 2002-2006 Chevrolet Tahoe Z71 2008 Chevrolet Trailblazer Base 2006-2007 Chevrolet Trailblazer LS 2006-2008 Chevrolet Trailblazer LT 2006-2009 Chevrolet Trailblazer SS 2003-2006 Chevrolet Trailblazer EXT LS 2003-2006 Chevrolet Trailblazer EXT LT 2003-2004 Chevrolet Trailblazer EXT North Face ## Details - **Price:** 3828.05 CAD - **Vendor:** Edelbrock - **Type:** Fuel Injection Control Modules ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 3828.05 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - User 3 - User 1 - User 4 --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/edelbrock-pro-flo-4-xt-efi-system-seq-port-ls-gen-iii-iv-cathedral-port-550-hp-max-35lb-hr-black) > Updated: 2026-06-27