SKU: 45009086613

Edelbrock Pro Flo 4 XT EFI System Seq Port LS Gen III/IV Cathedral Port 550 HP Max 35lb/hr Black

$1761.75 $1957.50
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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

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Description

Edelbrock Pro Flo 4 XT EFI System Seq Port LS Gen III/IV Cathedral Port 550 HP Max 35lb/hr BlackThe 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 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
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 45009086613

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4.5 ★★★★★
Based on 29 reviews
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Verified Purchase
Assyrian77
West Palm Beach, US
★★★★★ 5
It works!
These patches work great! My daughter likes them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 10, 2025
M
MsWaitWhat
Battle Creek, US
★★★★★ 5
Different than most on the market worth a try!
I’ve tried a lot of pimple patches and these actually feel different from most of the ones on the market because of the sulfur/OptiMSM ingredient combination. They don’t just cover the spot — they seem to really help bring everything to the surface faster. I had one deep pimple that had been under my skin for so long I honestly started wondering if it was just a scar at that point, and this patch finally helped it come out and heal. The patches are super thin and blend into the skin really well, so they’re easy to wear during the day or overnight. They stick well without feeling harsh on my skin, and I also tried them on my tween sons, who definitely need to wash their noses better sometimes, and they seemed to work really well on their softer skin too without causing irritation. I also love the little travel pouch included. Definitely one of the more effective acne patches I’ve used.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
T
Tati
New York, US
★★★★★ 4
Halo patches
I tried the Halo Dot Ultra Thin Pimple Patches, and overall I’m really impressed with them. In terms of effectiveness, they work well at helping bring pimples to a head and protecting spots overnight so they don’t get worse or irritated. The value for money is good since you get a decent amount in the pack and they’re thin enough to use during the day or night without being too noticeable. They’re super easy to use—just clean skin, place the patch, and go—and I like that they stay in place pretty well. I also find them pretty versatile, since you can wear them at home or out and about if you get a discreet one. For skin sensitivity, they’ve been gentle on my skin with no irritation, which is a big plus for me. Overall, they’re a simple, effective skincare staple I’d definitely keep on hand.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
C
Cheeky M.
Carnegie, US
★★★★★ 5
Nice patches -- Fair price -- has sulfur!
This is a review for the Halo Dot™ Pimple Patches for Face, Hydrocolloid Acne Patches with OptiMSM®, Visibly Shrinks Zit & Whitehead- Comes with Travel Essentials Inner Pouch (33 PATCHES) ($12.59) PROS: Price -- a fair deal for 33 patches and consistent with pricing of most other similar patches online. The inclusion of sulfur (this OptiMSM business) makes these unique also -- I can't seem to find others on Amazon with similar formulation, so these are intriguing. Sulfur is known for antimicrobial properties and can be helpful for zits and a little bit gentler on your skin than benzoyl peroxide or salicylic acid -- but anytime I put any sulfur stuff on zits that are above or around my eyes, it seems to migrate INTO my eyeball while I'm asleep and man is that uncomfortable. This little patch solves that dilemma nicely by keeping the sulfur put. CONS: none that I can see; these are a nice entry into the hydrocolloid acne patch space.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
J
Jennifer
Port Orchard, US
★★★★★ 3
Disappointing results and poor adhesion.
I love Hydrocolloid pimple patches. I have used at least half of the brands available for sale and even the non brand ones. I’ve also used the hydrocolloid sheets and cut them to size and the hydrocolloid gel bandaids and used for pimple patches. I love how they help along the healing and keep me from picking at the pimple. This brand I wasn’t impressed by. None of them stayed on my face for half the night. The one that remained in place the longest out of the 4, didn’t show any signs of improvement. The longest they kept in place was 3 hours. I had to reapply and I still handbrake noticed any signs of healing after using one full sheet on 4 smaller sized blemishes because the adhesive wasn’t working.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026

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