Product Review: Holley Sniper EFI 2 - Is It Worth It?

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If you have been following along with Project Dazed and Confused, one of the biggest improvements we made was installing the new Holley Sniper EFI 2 fuel injection kit. Now mind you, this wasn't your average car, this is a true classic muscle car, a 1971 Chevrolet Chevelle SS powered by a big block 454! We went with the full package, Holley Sniper EFI 2, Hyperspark ignition, Hyperspark coil, Hyperspark distributor, Holley fuel pressure regulator, and even a Holley Sniper air cleaner.
This video is a product review, an overview of what 2 Hacks Garage thinks of the system and what we determine. We are not professional mechanics; we are do it yourself gear heads that love taking on new projects and have a passion for performance. We went into this project having quite a bit of experience installing the original Holley Sniper EFI kit, but this is first Sniper EFI 2 kit we have done.
Is this kit easy to install? Is it truly DIY? Does it function as it should? Was it fun? Is it worth it? Did we learn anything? Watch and find out!
#holley #diy #musclecar
Product Links:
Sniper EFI 2 Master Kit: www.holley.com...
Sniper Hyperspark Distributor: www.holley.com...
Sniper Air Cleaner:
www.holley.com...
Sniper Hyperspark Coil:
www.holley.com...
Instagram:
Jeffro521
/ jeffro521
‪@HolleyPerformance‬

Опубликовано:

15 сен 2024

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Комментарии : 94

@coreyrichardson7729 6 месяцев назад

Fuel lines plumbed to the throttle body are not dual feed. One is supply and one is return to tank. Throttle body has an internal passage to move fuel to front and rear set of injectors.

@timwindsor03 7 месяцев назад

Awesome video JEFF. Thanks for sharing. Keep the content coming. Hope you have an incredible weekend

@2HacksGarage 7 месяцев назад

Thanks man!!! I hope you have a great weekend too!

@bioeddiefpv6265 3 месяца назад

Thank you for the video was very helpful... Coming from a dinosaur of car performance wiring is the nightmare to me and not too bad here. Thanks

@2HacksGarage 3 месяца назад

You can do it! not a problem, glad we could help!

@bioeddiefpv6265 3 месяца назад

Any videos on early c3 Corvettes?

@2HacksGarage 3 месяца назад

@@bioeddiefpv6265 not yet!

@johannesschroff4097 4 месяца назад

Had to use 20kOhm plugwires 2 workaround nonexistent shielding/emi protection on sniper 1. Watchout and be prepared for EMI due to poor electrotechnical design on any aftermarket EFI close to hi power AC sources. Hope this helps anyone in need.

@2HacksGarage 4 месяца назад

Zero issues with this

@Turningwrenches85 6 месяцев назад

Love the quick response no hesitate #snappy , definitely worth it 😊

@2HacksGarage 6 месяцев назад

It really is! Thanks brother 🏁

@MikeBaxterABC Месяц назад

12:52 WHOA!!!! epici! .. I did not know the fuel was injected in a circle like that on every "barrel" (I am just getting back into hotroading as I'm retired, everything used carburetors back then) The fuel rains down like one of those face expensive showers, you see on home renovation shows!!! LOL

@2HacksGarage Месяц назад

Oh man, it is wild! This system works very well for sure!

@RADMAN752 7 месяцев назад

Awesome video thank you very much for all the details

@2HacksGarage 7 месяцев назад

No problem!! Glad you enjoyed it, thank you 🙏

@piewear Месяц назад

Curious if you did a mpg compare. Im trying to get better all around mpg from my 396 stock motor. Thinking the Edelbrock pro flo efi may get better mpg results. Any input would be appreciated..thanks for the video

@2HacksGarage Месяц назад

We did not do that. But the system is designed to be efficient and provide the fuel needed to make power. I can tell you this though, it’s a massive improvement on fuel consumption and drive ability

@piewear Месяц назад

@@2HacksGarage thanks for taking time out to respond! Much appreciated.

@MikeBaxterABC Месяц назад

3:18 ... EVERY install of Sniper 2 I've seen on RU-vid uses an inline pun ... I REALLY recommend an in-tank pump, they run super COLD dipped in gas all day long! :) .. 13:13 I like the looks of Holleys intank stuff, but I really don't want to hole saw my old gas tank .. maybe when I get a new tank someday I'll swap up to Holey's pump. For now I have purchased a decent "OEM replacement" rated pump by Quantum. .. it's small enough to fit in the stock hole, and on the stock fuel pump support .... and still keep my old fuel gauge! :)

@2HacksGarage Месяц назад

the in tank pump is really good! That being said, we chose the one that came with the kit. The pump that comes with Sniper 2 kit is an upgrade and works really really well!

@MikeBaxterABC Месяц назад

2:27 With my age and eyesight?? I find the PDF online to be much better for reading ..... just click the PLUS SIGN a few times make the words size you want!! I've read over the instructions on line 5 times, but will load them into my old iPad when we start bolting it in!! Can't wait to install the sniper 2, holley fuel regulator, and original CAT fuel filter set up!!... hopefully next week! :)

@2HacksGarage Месяц назад

It's pretty awesome Holley provides multiple ways to view the instructions. The install is pretty smooth, you'll have no problem with it! Good luck my friend!

@MikeBaxterABC Месяц назад

On the Sniper 2, There are two Adjustments screws with green springs around them. I really want to know what each screw adjusts? Like the front one (towards the front of the turck) adjusts _____ ? And the rear most one is for adjusting the _____________________?

@2HacksGarage Месяц назад

Front (toward the front of the truck) or BACK. "With the vehicle in neutral, adjust *the idle screw on the primary shaft* until the IAC Position reads between 2% and 10%. While adjusting *the throttle plate screw*, watch the TPS value."

@MikeBaxterABC Месяц назад

3:59 ... The Holley Power Distribution Model is BOSS .. I could not get one short notice but I WILL upgrade to it some time in the future, .... maybe if I get the Holley Hypersark system when I do. :) 8:39 :) I JUST put a brand new distributor in a few months ago ...so i'm gong to keep using it for a year or so. :)

@2HacksGarage Месяц назад

That PDM is a game changer, makes things a breeze!

@Enjoytheinbetween 6 месяцев назад

EFI or LS, I don't know what to do. I love my 454 but hate dealing with carbs, I want to be able to drive it with no worries, better MPG etc. Choices, choices..... Most people I know who did the efi upgrade love it but still decided to upgrade to LS and they like it better.

@2HacksGarage 6 месяцев назад

Honestly, I’m a bit old school but prefer drivability. I have nothing against the LS platforms, they are awesome and affordable. That being said, I prefer a classic V8 and Holley Sniper. You can’t go wrong with either, Holley makes many great upgrades for both classic and modern engines.

@focused313 5 месяцев назад

If your 454 is built and has significant horsepower, stay with it. If it's less horsepower than stock 5.3 ls motors, swap it.

@VinoRatRodbuilds 7 месяцев назад

Sweet set up. 👍

@2HacksGarage 7 месяцев назад

It is!! Pretty straightforward on installation too.

@joshualawson2442 Месяц назад

Battery voltage reading continued to climb to 13.7 with the vehicle off at 11:10 do you know why it would do that

@2HacksGarage Месяц назад

there was a battery charger on it

@MichaelBrown-yp1eq Месяц назад

? I notice that there is only one o2 senser which sounds good if you are running a single exhaust, but in a dual exhaust system there is only one bank of cylinders being monitored. would it not be better to have an o2 senser for each bank in a dual exhaust system.

@2HacksGarage Месяц назад

The sniper system supports one o2 sensor that can if needed be, used on either bank.

@MichaelBrown-yp1eq Месяц назад

@@2HacksGarage: still only reading just the one side of the engine. in a V6, and V8 engines you need two o2 sensors. so why do the aftermarket only do just one? they should design a system with two o2 sensors.

@007freakazoid 28 дней назад

It's unnecessary to run on each bank. System is recording the average on the one bank accurately enough to meter the whole engine. Most 4cyl engines run the O2 in one of the head pipes, so it's only recording 1 cylinder's O2. Remember, all cylinders are going to be roughly the exact same as long as everything is mechanically sound.

@MichaelBrown-yp1eq 28 дней назад

@@007freakazoid; on a I4, or a I6 engine that would be great. on a V6, or V8 with dual exhaust no. one o2 sensor will only monitor one side of the engine. I prefer to have two o2 sensors to monitor both banks.

@2HacksGarage 28 дней назад

@MichaelBrown-yp1eq you can still install a standalone dual bank o2 setup to monitor things, I did that on my car

@johnelliott7375 7 месяцев назад

Probably cheaper to get a good carburetor and run it, and would be closer to half the cost. I'm going to have to watch and see.

@bioeddiefpv6265 3 месяца назад

Very true and we went the same route... In the end on the sniper 2 kit came out and was compatible with the dual plane It was actually worth the reliability tuning ease and fuel mileage and comparable performance. Coming from a dinosaur who does not enjoy any electronics on vehicles hardly, this is my personal opinion. The carburetor is much cheaper though especially if you're good with minor tuning And just looking for solid performance probably better.

@antibowtie440 3 месяца назад

I have $3600 tied in a 2x4 sniper 1 system -pump hoses etc. now I need $950-1250 professional tune. Not happy not doing it. Two AED carbs on the way. 👺

@roberts208 5 месяцев назад

I have a question I can't seem to get an answer too I have an Oil Pressure cut off for my Fuel pump will this cause issues when I install my Sniper 2 ?

@2HacksGarage 5 месяцев назад

How is it currently wired?

@roberts208 5 месяцев назад

@2HacksGarage I'm waiting for the Sniper 2 but as it is now the fuel pump won't pump unless there is oil pressure in the motor.. it's a fire safety thing

@dougwalker6540 2 месяца назад

Any reason you didn’t put the O2 sensor in the bung on the header?

@2HacksGarage 2 месяца назад

It needs to be positioned a certain distance from the collector

@dougwalker6540 2 месяца назад

@@2HacksGarage That's what I assumed, but wanted to make sure.

@NathansMoparGarage 7 месяцев назад

😎👍

@2HacksGarage 7 месяцев назад

🤘🏻🏁🤘🏻🏁🤘🏻

@larrydavis4191 5 месяцев назад

My friend just put one on his truck with a 440 and he keeps loosing fuel pressure.

@2HacksGarage 5 месяцев назад

What’s his fuel pressure regulator set at?

@MikeBaxterABC Месяц назад

5:04 .. The O2 sensor is too far from the engine in my opinion Holle recontends to put it within 8 r 0 inches of the header collector (down wind of course) ... BUT?? In your case with the Cat right there, providing some back pressure, and an solid air tight exhaust system it will work fine Im sure :)

@2HacksGarage Месяц назад

oh it works great! In this case, we had to put it where it made sense and also kept in mind the instructions

@UnfinishedProjectDartSport 7 месяцев назад

🦈

@2HacksGarage 7 месяцев назад

🐿️🐿️

@johnelliott7375 7 месяцев назад

Good morning and, I believe that it will work good except for it will have to relearn everything everytime you start it up.

@2HacksGarage 7 месяцев назад

Good morning! It does a good job of learning and it is snappy on the throttle

@johnelliott7375 7 месяцев назад

@@2HacksGarage I will have to stay tuned to see if you like it or not.

@alexhellenbach8820 5 месяцев назад

Just say you're sponsored man.

@2HacksGarage 5 месяцев назад

I’m not paid by anyone

@alexhellenbach8820 5 месяцев назад

@@2HacksGarage you make it sound that way. Surely there are cons and surely things didn't go that smooth and there was cussing. There always is.

@2HacksGarage 5 месяцев назад

@@alexhellenbach8820 I’ve done quite a few sniper installs, you learn a lot along the way. The sniper 2 kit is much much easier than the original. The instructions are very clear and the power distribution module makes things painless. I’d say Holley listened to their customers when designing this kit, it’s so easy to do and doesn’t require anything crazy to accomplish, even a Mustang owner could do it 🤣

@autosalvage 7 месяцев назад

How u like it got a Chevy truck might put one then on it

@2HacksGarage 7 месяцев назад

Absolutely love it!!! Affordable and easy to install

@autosalvage 7 месяцев назад

Think this 87 Chevy truck needs one our plans is to put 383 in it

@billmcmeekin7909 6 месяцев назад

@@autosalvage I'm looking for same set up. 373 from Smeding with Sniper 2, on my 85 GM stepside. Just curious on fuel system delivery. Still want two tanks. I'm sure there's a way. Good luck. Ol' trucks rule :⁠-⁠)

@callofgeorge 3 месяца назад

good stuff. gorgeous car. sub'd to see more.

@2HacksGarage 3 месяца назад

Thanks for the sub! Thank you 🏁🏁🏁

@jafopt 4 месяца назад

I have a sniper 2 and it is garbage. “Not field serviceable” per Holley. They leak. Just junk.

@2HacksGarage 4 месяца назад

Before you say that, what problems were you having?

@jafopt 4 месяца назад

@@2HacksGarage less than 1000 miles, leaking because the O rings were crap. How hard is it to source decent O rings? I had it fixed by a mechanic who sourced known good O rings. I also didn’t have to wait the 2 months and unknown cost for Holley to sort it out. Holley has a one year warranty only usable by the original purchaser. In a restomod, you rarely have the vehicle on the road before that “warranty” runs out. Why is the warranty not transferable?

@jimm8264 2 месяца назад

But was it easy?

@2HacksGarage 2 месяца назад

Yes it was. The instructions, diagrams, and online resources made it a breeze.

@dannybradford5551 4 месяца назад

Fuel injection..for those who don't know how to work on carbs..carbs are simple,reliable, and make more power..and I'm sorry but this video sounded more like an advertisement than anything

@2HacksGarage 4 месяца назад

Everyone has their own ways of doing things. I do both, carbs and fuel injection. Just depends on the application and what the goals are. This car is a driver, fuel injection makes sense. My tunnel ran 521 ford, I went with carbs. To each their own 🏁

@2HacksGarage 4 месяца назад

It’s also nice to know how to work on both, best of both worlds 🏁

@AdBul_ 4 месяца назад

Sayiying "for those who dont know to work on carbs" and then "carbs are simple" just says that you dont know how to work on fuel injection and are afraid of electrics. Fuel injection is much more reliable and correct choise for 99% of road cars.

@joraybeast2460 2 месяца назад

@@2HacksGarage imagine doing a tunnel ram with one carb and one efi or a tunnel ram with a sniper 1 and a sniper 2

@2HacksGarage 2 месяца назад

@@joraybeast2460 would be fun!!

@larrydavis4191 4 месяца назад

Not worth the $1750 paid for the unit. Could have bought a nice carb for half the price with not as much trouble. It seems that you have a problem no matter if the part is defective they make it your fault and you end up paying more for it.

@2HacksGarage 4 месяца назад

I’ve installed many without issues, some troubleshooting here and there but nothing hard