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Description
Holley EFI Terminator X Max GM Gen V LT Late Direct Injection Kit - 550-1611Overview: Take control of your GM Gen V LT1, L83, or L86 engine with Terminator X! Do not settle for a factory ECU with a cumbersome tuning interface when you can have complete control of your engine, self learning fuel strategies and the proven, race winning technology of Holley EFI at a budget friendly price! Terminator X features real time fuel learn, an integrated 1bar MAP sensor, and four programmable inputs and outputs. The inputs and outputs
Overview:
Take control of your GM Gen V LT1, L83, or L86 engine with Terminator X! Do not settle for a factory ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley EFI at a budget-friendly price! Terminator X features real-time fuel learn, an integrated 1bar MAP sensor, and four programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. Terminator X comes fully loaded with base maps for common LT engine combinations to get you out of the garage and on the road/track fast. The 3.5" touch screen LCD handheld contains an easy to use calibration wizard as well as tuning and gauge display functions. All Gen V LT Terminator X kits will come with an external Gasoline Direct Injection Controller, which enables the end user to control and tune, factory injectors, GM Gen V LT Variable Valve Timing (VVT), and factory fuel pumps. Also included is Holley EFI's industry-leading, easy to use software suite that allows full laptop access for advanced users. Whether you are building, an LT swapped budget beater or a boosted racecar, Terminator X has the features and technology you need at a price that will not break the bank! To identify if your engine is an early or late application, refer to your fuel pressure sensor, located behind the intake manifold. Early sensors have a 4-pin connector, whereas late sensors have a 3-pin connector. This will help you pick which kit you require for your engine.
Features:
- Plug and play GM Gen V LT engine control including GDI and VVT support
- Ideal for swapping late model GM Gen V LT engines into vintage vehicles
- 3.5” handheld gets your engine running in no time with a step-by-step calibration wizard
- GM LS and LT Drive-by Wire Throttle Body Control (Terminator X Max Only)
- GM 4L60 and 4L80 Transmission Control (Terminator X Max Only)
- Included engine harness plugs directly into the factory LT DI injector sub harness
- OEM Injectors supported, with part numbers provided in the handheld wizard, or software
- Genuine Bosch LSU 4.9 Wideband Control (Will not work with LSU 4.2 Oxygen Sensors)
- On-Board Diagnostic LEDS for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal – Cam Signal – VVT Status – Pump Control – and DI Injectors. Allowing you to identify any Critical engine issues at a glance
- Built in 1bar MAP Sensor, vacuum hose adapters included (1/8th – ¼ and 3/16ths) - or for Boosted applications, you can disable the internal MAP sensor, and utilize an external LT MAP Sensor, the harness comes with the connector terminated, making the inst
- 4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake (Fuel and Oil Pressure Inputs are pre-terminated)
- 4 Outputs – Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and more
- Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties
- Nitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR
- Advanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table
- Integrated data logging to the 3.5” Handheld SD Card
- Free EFI Tuning Software for complete control of your Terminator X power plant
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley EFI |
|---|---|
| Emission Code | 3 |
| Product Type | EFI System |
| Warning | California Proposition 65 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
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4.6 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
These Budget Earbuds Actually Impressed My Wife (and Our Wallet)
Style: Standard, Color: Ocean Blue
We’re retired and try to be smart with money, so when my wife wanted a pair of wireless earbuds for her daily walks and audiobook listening, I wasn’t about to drop $150+ on a big name brand. After researching, I took a chance on these TAGRY earbuds and I’m honestly glad I did.
She’s been using them almost every day for a few months now, and they still work great. The battery life is legitimately impressive — the case shows the charge level with a little LED display, which is surprisingly handy, and we easily get several days of use before needing to recharge. The wireless charging is convenient too. Sound quality is clear and perfectly decent for the price — good enough for her favorite music, podcasts, and even taking phone calls in the house. They stay in her ears well during walks, and the IPX5 waterproof rating gives us peace of mind when it’s drizzly out.
The only small complaint is that they’re not quite as comfortable for really long wear (she sometimes switches ears after a couple hours), and the bass isn’t super deep compared to premium models. But for everyday use, that’s a very minor gripe.
Overall, these have been a solid, no-fuss purchase that delivers way more than we expected for the money. If you’re a senior, on a budget, or just don’t want to overpay for earbuds, these are worth trying.
Hope this helps someone!
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Get them!!!
Style: Standard, Color: Black
Run ...don't walk. These headphones are amazing. I was on the verge of giving up trying to find wireless headphones that could fit my small ears, be comfortable, have great sound quality, when listening to music and talking on the phone, cancel noise, that keep a decent charge, that don't fall out as I'm walking and moving my head, and are AFFORDABLE These headphones check ALL the boxes. There was a no fuss set up and pairing that took 2 min. I haven't charged them in 5 days and still have 33% charge left on them after listening to music for hours for days. They came charged as well. I've had much more expensive brands and they have failed me. These are IT and I will be purchasing them as gifts for friends and family.
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Reviewed in the United States on May 25, 2026
★★★★★ 4
Durable and reliable for calls, but not for audiophiles
Style: Standard, Color: White
This product is impressively durable and has held up well through daily use. It offers great value for the price, though the sound quality is best suited for specific tasks.
If you primarily need a headset for voice calls, it performs reliably and is a solid professional tool. However, if you are looking for high-fidelity audio or noise isolation for long music sessions, the sound profile may feel a bit lacking.
Pros: Robust build, excellent value, clear for calls.
Cons: Basic audio range for music, no advanced noise control.
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Amazing buds/price/service... buy these!
Style: Standard, Color: Purple
Yes, my subject line sounds like that trash hyperbole you get on annoying pop-up ads on your Smartphone! And ironically, it usually has to do with ear buds. There are tons of them on the market, and everyone claims to be the best.
Now, first off, I am just a customer… never got any gifts or money or anything from this company, nor was asked to “click on a review” for a discount or whatever. No… the reason for all this hallelujah chorus, is that I’m really totally both jazzed, and a bit in awe of these earbuds. I think the main mind-blowing thing about them is the price. I mean, I have a bit of experience and knowledge with this kind of technology, and frankly, these days, what “guts” that are needed to be used to create Bluetooth ear buds is not that complex… nor expensive. How company’s like Sony, Apple, Bose, etc. can charge upwards of $300 for these boarders on theft and fraud!
I’ve tried those “Rolls Royce” buds, and I urge you to do the same, and then try these Tagry Bluetooth Wireless Earbuds that are literally 90% less expensive. Yes, they retail for about $35! They come in an excellent quality charge base, are extremely easy to put on, (and have three extra size buds to give you a custom fit), and most important, their sound quality, and I mean crisp highs, solid middles, and bone- rumbling base, are outstanding. I cannot understand what more you would want either using them for talk radio, podcasts, YouTube, streaming movies, or TV, or playing your Amazon Music or Spotify or iTunes playlists. And yes, if connected to your iPhone, you can make and receive calls, and the microphone in the buds are top quality.
Their Bluetooth software is flawless, connecting to your iPhone, or other Bluetooth devices effortlessly. They come with a pleasant woman’s voice letting you know various messages, like which earbud is in what ear, if they are connected or turned off, your volume control (including excess volume warning), etc.
I’ve had these for several months, and have found the charging, which has a bright LED display and shows the individual charging of each bud, along with their percentage easy to read.
And a note on their service. I’ve heard horror stories of folks trying to reach the outrageously over-priced other earbud company’s for tech support, or refunds, exchanges, etc. Basically it’s nonexistent, and when you do miraculously find a phone number to call them, and get someone on the line, you have to go to the UN to find an interpreter of rare third-world languages to understand what they are saying, and they seem to be trained, not on anything to do with the product, but to make the call as useless and confusing as possible, so that you will just give up and throw their buds, and your money in the trash.
Now, I did have an initial problem, after a few months, in that the base charger seemed to be slowing a bit. Tagry gives you a LIFETIME WARRANTY… yes, an actually lifetime warranty, not one of those sham “lifetime warranties”, that corrupt company’s like Hammacher Schlemmer have.
I had enrolled with Tagry, on their website, to activate my warranty as soon as I received the buds. I called Tagry when I was seeing what could be a glitch in their charging base, and yes, unlike most other companies who hide their contact numbers as if they were nuclear codes, Tagry’s support phone number is plainly printed on their manual, and to my astonishment, I immediately was connected to a good ‘ol American customer service person, who actually worked for the company, spoke English, and made me feel as if I was a long-ago trusted friend. They truly cared, and said they were sorry, and that there was no need to troubleshoot the base, or return it, instead, they would process an order to send me a new one.
A day later, they actually called me back to let me know that the replacement had been shipped, and that I should have it in a day or so, and if not, to please call them back right away. And yes, to apologize again for any inconvenience. The replacement arrived the very next day. And again, their warranty is indeed for a lifetime, a no questions asked replacement policy. This is how much they believe in their product, and respect their customers.
So, yes. It is insane to pay more than $35 for quality Bluetooth earbuds. Last year, I sent about a dozen of these out to friends and employees, to use for personal use, and for all that Zooming going on… and they love them. And none of had any problems.
I’m sure you have had a plethora of bad experiences in the past few years, what with isolation, and way too much ordering on-line, finding the products you buy to be substandard, and customer service virtually non-existent. And that is why I’ve spend all this time expounding on the greatest of my earbuds. Yes, I have a life. Really. But what a joy to be able to tell a story like this, rather than the kind of frustration most of us are experiencing every day!
Yes, goodness and quality still exist. It’s rare… but it’s out there!
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Reviewed in the United States on March 24, 2023
★★★★★ 5
Great value for both phone calls and music
Style: Standard, Color: Black, Style: Standard, Color: Black
Sometimes I'm amazed by the advancements in wireless and micro technology, especially when it comes to audio. These popped up in an email from Amazon a few days ago. Though I usually ignore those Deal notices this one intrigued me. I have a JBL Everest over-ear headset that I love for indoor phone calls and they're pretty good for music too (though I don't use them that way). I often like to go outside when I'm on the phone and the JBLs aren't convenient to use with a stocking cap, so I'd thought briefly about getting something in-ear to wear under my hat. These were $35 and the reviews were good. I liked that the case wirelessly charges the ear buds, and the case can be charged wirelessly too. My Samsung phone has wireless charging so I already have two wireless chargers and they're very convenient (especially given that the USB port on my phone was getting sketchy). So I figured I'd give them a try. I played a variety of my favorite music. I first asked for Jeff Buckley live music and the first song that started playing as I stepped outside was "Hallelujah." I walked around the property listening to my favorite music and before I knew it I had been listening to music for about three hours. I had really only cared about the sound quality for phone calls and whether they would stay in my ears (which is usually a problem for me). They never came close to falling out and they are comfortable. For phone calls the sound quality is very good on both ends. And though they're rated as having a 33' range I walked all around the house and got considerably farther than that from my phone with two walls separating the devices and I had no dropouts. Overall I am so happy with them that after a week of using them I ordered a backup pair.
I have three VERY minor niggles but even combined I wouldn't consider them significant enough to knock off even ½ star. First, I had trouble gripping them well enough to get them out of the case quickly when I got an unexpected phone call. I started leaving them on a paper towel on the table next to me, but it now seems I've discovered the right way to grip them. Second, though they have a voice announcement of which side is which when first removed from the case, I was concerned that I might confuse L and R as they don't appear to have any visible indicators. My solution was to use my fine-point permanent marker to write an L on the left one. Third, one of my wireless phone chargers is a tilted stand that holds my phone at a convenient angle. I was unable to get the Ear buds case to wirelessly charge on that one until last night when I accidentally discovered that the problem was that the case was too small to hit the sweet spot on the charger. I solved the problem by boosting the case up with a pad of mini sticky notes (as shown in the photo).
EDIT (I apologize if I forget to come back to delete my previous review):
None of the above has changed but I forgot to mention that these are NOT good for noise isolation (at least not the way they fit me) but I prefer it that way. I'm a musician and music sounds less natural to me when the surrounding environment is completely eliminated, and I like being able to have a conversation or hear a knock at the door without removing them. Even without a tight seal I never have to reseat them and the sound quality stays consistent (a first for me after trying several other brands).
UPDATE: I've been using these ear buds for five weeks now. I use them for hours every day and they continue to impress me. On three occasions only the right channel had a signal when I initially put them in to listen to music, but each time I put them back in the case and took them out again (which turned them off and on) and they worked normally. I've only had this happen with music and only when I first take them out of the case (i.e. it hasn't happened while on a call or after I've been listening to music with both working).
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Reviewed in the United States on February 14, 2023
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