Holley Sniper 2 EFI: Your Complete Installation Guide To Sniper 2

[@aarongrattafiori617]

As a gen1 owner, sure seems like a lot of "things we probably should have done the first time"

[@haywagon93]

Agreed

[@Shantzonpoint]

Yes sir. Only issue I've had is I had to readjust the butterflies as they were sticking when cold. I'm guessing the new "better throttle response linkage" was to fix this common problem. The CANbus connectors are a bit of a pain but I wish they would've stuck with it. I have it all set up with a Y-splitter to a laptop USB connector in my console. Sucks i'd have to change it all if I ever upgraded. I guess I could go the bluetooth module route and just use my phone instead of the 3.5" display and then bluetooth to my laptop as well.

[@aarongrattafiori617]

@@Shantzonpoint yeah, same with lots of people buying the extended linkage to fix the stiff opening under vacuum.

[@wolfthornhawkridge5705]

My thoughts exactly, I wonder if they are going to offer a trade in trade up for the new unit. Especially since I had to send mine back twice for loose injector connections. Oh and I also purchased the $ throttle adapter.

[@armygreenfj3924]

That comes with every engineering. I’m glad they fixed these issues.

[@ricardomoreira6639]

I had just bought my sniper 1st generation .... few days later, you guys started to sell the new generation, almost with same price.

[@quadepaul2169]

Me too! wish they would provide some sort of upgrade/trade in deal. Mine is still in the box.

[@armygreenfj3924]

If you bought it from summit they have a 90 day return.

[@75novaguy73]

Watching these videos really makes me want to get going on my current project or to start the foxbody build id like to do...

[@johnm1843]

Based on all the concerns gen 1 owners express and the lack of support to upgrade them to gen 2 the jury is out to purchase this system. It’s a shame Holley does not step up to support customers who support them.

[@theposerhoser]

Almost nothing is these days. When a new phone or car comes out you don't get an upgrade because you supported a company, you're stuck with the old model. It's just capitalism.

[@Edgar-and-Wrench]

Im done with the carb on my 302 maverick. I cant wait to be able to buy one of these.

[@BiggestLittleTrucks775]

This video is great for when I do my Holley Sniper 2 install on Ford 429 big block. Can't wait to see how it performs!

[@nicholasprusko9590]

Just installed a sniper2 with the master fuel kit, very disappointed with the cast fuel pressure regulator. Both the one that came with the kit and warranty replacement leaked and sprayed fuel all over the engine. I ended replacing with an aeromotive one to fix the issue.

[@HotRodGuyGarage]

Is the ECU still potted in a jb weld type substance? Are the throttle shafts bushed and sealed now?

[@Randomgearhead]

Hope u provide Delphi sensors that read accurately

[@andysteward8617]

I’ll come right out and say it, the Holley ProJection was just plain better. It had better instructions, and the controls were analogue. It just worked.

[@PopoMedic]

Just picked up a rig with a sniper but the display is disabled. Can’t adjust the settings. If y’all can help lemme know.

[@dhill5057]

🏆 i need on for a 350 Oldsmobile motor 1972 cutlass. Keep up the great work and this video

[@hendo337]

I want to see the Xflow 1375 capabilities with Sniper 2 and e85 compatibility. This way on can take a non-LS and go four figure hp with boost and a simple system. For example...a 351w(or stroker) with aluminum heads and single plane, a Vortec 5700 or 7400, Ford 429/460, PSI 8.8/ Vortec 8.1, Mopar LA/Magnum, B or RB, Ford 240/300, Mopar Slant/Hemi six, AMC 4.0, 232/258, Gen 1/2/3 Hemi, Buick 300/340/350/400/430/455, Rover 215/4.0,4.2,4.6, Olds 350/400/425/455, Cad 429/477/500, AMC 304/360/390/401, Godzilla 6.8/7.3

[@212caboose]

Y'all should definitely do a quick vid on how to replace/integrate factory computer controlled/fuel injection with this kind of system.

[@nickylevering4805]

What kind of vehicle you working on? Im doing this now and depending on your car it might be alot easier than u think

[@ChaoticMN]

I wish there was a video showing the Start Up And Wizard using Blue Tooth since the screens are different.

[@nateburckhard8281]

Thank you for going into more detail on the tuning process. This is helpful for Gen 1 as well. Any plans on an upgrade program? Trade in your gen 1 for half off of gen 2? Also will the new bluetooth adapter work with the gen1 with a harness adapter?

[@HolleyPerformance]

No current plan for an upgrade program. Bluetooth module will first be available for Sniper 2, potentially Sniper 1 later.

[@tcwest83]

Before I bite the bullet and get this to replace my problematic "Gen 1" sniper, ima wait for the bugs to get worked out.

[@HolleyPerformance]

Years of development that has included nearly 5000 hours of test stand run time, extensive thermal testing that included temperature sweeps between -40C and 200C, and thousands of real-world miles on a variety of engine platforms

[@justinnav]

​@@HolleyPerformanceToo bad you didn't do that the first time before all of us spent $1300 on your original junk Sniper.

[@f100rangerxlt3]

Does it have ability to supply oil pressure to the 5" dash, with the additon of the transducer of course?

[@jameslinde340]

holley can you please provide some more information on the 4 speed transmission controller mentioned in the video

[@jameslinde340]

@HolleyPerformance ???

[@HolleyPerformance]

Sniper Trans Control will be announced at a later date. It was teased in the video

[@tylerhoodenpyle7800]

​​@@HolleyPerformance any update?

[@GbodyMedia]

Awesom Holley

[@statuhz_1328]

hope they give it a update to make it easier to tune a rotary with it.

[@MikeBaxterABC]

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 _____________________?

[@date6431]

Is there going to be a sniper 2 2300 2brl

[@sharpcf73]

Can you run two together, with a 6/71 blower. Zoomie exhaust, so none of them come together, could only pick up one on the o2 sensor. Lastly would it work with the Holley efi standalone?

[@brundon]

How does this differ from the Atomic 2 EFI system from 2021?

[@mrknebel475]

How do I use the 2 wire magnetic pickup with a cdi box and use timing co trol with it?

[@MikeBaxterABC]

I have a 94 Chevy Truck with Throttle Body now. If I instal Spier 2, will I need a new manifold?

[@buddysullivan1522]

I've got a 64 f-100 with the original fuel tank that doesn't have a return line i read i can use the sending unit in the tank that mounts on top of the tank can i use my sending unit or should i buy a new one from holley.

[@jeffharper6824]

When should we expect super sniper 2 for root style blowers?

[@HolleyPerformance]

No current plans

[@MikeBaxterABC]

@@91m I assume they figure anyone who's running a Roots, can make the snuper 1 work just as good if not better.

[@michaelanthonyortegaherrer348]

I jus bought one for my 78 chevy waiting for the motor to be built

[@stephencain896]

Where is the bluetooth module available?

[@robertjackson7590]

Great video. Stock 289 65 Mustang a friend wants to run this on, mechanical secondaries with an auto and 800 cfm sounds like a bad combination. Is this a problem that will create a bog from a stop? Stock gears. Any input appreciated. What's the best CFM for this little engine with this combination?

[@cmkmd]

The cfm with fuel injection is not a problem with fuel injection because its forcibly injecting the fuel where carburetor it does matter because you need a metering signal ie air speed for the carburetor to work properly

[@robertjackson7590]

@@cmkmd Thanks for the input. I see what you mean on the fuel side but would think velocity would drop to little or nothing creating the bog. 600 to 650 would be more than enough for this engine I would've thought.

[@MikeBaxterABC]

@@cmkmd exactly! .. That's why it runs 60 PSI for fuel.

[@aeo177]

Can i run a holley sniper 2 without ignition timing control while having a locked out distributor ie 32 degrees of timing all the time ?

[@stevekerr100]

Hi, just installing a sniper 2, can I plumb the pcv valve into the front of the sniper 2 where the bung is, and also would it be better to run the ignition feed directly from the battery via a relay from the ignition to ensure a good 12volt supply

[@carlj.2023]

I have a 1952 ford with no return spot on my fuel tank. Do you have to have a return line on the Sniper 2?

[@jb91300e]

Holley, does it support E85?

[@HolleyPerformance]

E85 support is not currently supported with Sniper 2

[@jb91300e]

@@HolleyPerformance thanks for replying. I’m assuming the original Sniper does not support E85 then either. Is it due to the injectors and seals not being ethanol compatible, or is it not rated to flow enough ethanol to hit the HP rating?

[@HolleyPerformance]

@@jb91300e all of the above

[@207shenanigans]

Does the 4500 have vacuum ports ?

[@Matt2chee]

I need something I can put in a 78 t-bird with a 351w factory 2 barrelfor a 80 year old guy. I want him to get in turn the key and drive.

[@HolleyPerformance]

Take a look at - www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_1-_and_2-barrel_systems/sniper_efi_2300_2bbl/

[@hendo337]

If you put a 4bbl intake on you can use this Sniper 2.

[@bclose710]

Waiting on the 5in screen to order

[@planetkaziah]

THANK YOU!!!!

[@miskoradanov533]

Will this work with twin carb replacement

[@firstrespondergarage]

🚒👍 when will the super sniper 2 be available? I have a supercharged small block Chevy with a Detroit roots blower. 👍

[@Littlejj-h4s]

I want to buy this whole kit with distributor fuel pump everything for me as my Christmas

[@jdez42]

There is no "initial start up" on the 5" screen for sniper 2

[@gtsman6954]

Are you guys going to make a dual quad version of the Sniper 2?

[@HolleyPerformance]

Not currently planned

[@CC-zg8vt]

Hi! Will there be a controller for the 545rfe transmission coming soon with the sniper or terminator x ?

[@ytelpeloncito5151]

Will this bolt on a 318 5.2 mopar magnum engine

[@Furyataurus]

Will this work on an older jeep with an amc v8???

[@6spd85notch]

Is there a sniper 2 for forced induction?

[@HolleyPerformance]

Sniper 2 EFI supports up to 650hp naturally aspirated or 575hp on boost with four 100 lb/hr injectors

[@87corvair]

When you select system type there is no sniper 2 option so idk why everything keeps saying that.

[@moemac1112]

I'll wait a year b4 I attempt to buy the Sniper 2.... just to make sure there are no issues with it.

[@HolleyPerformance]

Years of development that has included nearly 5000 hours of test stand run time, extensive thermal testing that included temperature sweeps between -40C and 200C, and thousands of real-world miles on a variety of engine platforms

[@maxwelltatro4181]

Does this system work in marine applications like the sniper 1?

[@scarface4471]

IS there a 1800# i can call for help?

[@justinmccaffity6635]

What digitals displays are supported by the Sniper 2? All the ones I found on the website say they do not.

[@HolleyPerformance]

Website shows current and future availability

[@treymartin3457]

Question: If I’m running the sniper efi 2 with a Holley drop in sniper efi fuel pump (fuel cell). Do I still need the external pressure regulator?

[@Wilson_Racing]

Yes you still need a pressure regulator

[@HolleyPerformance]

Depends on which fuel cell pump module you select. We offer return and returnless versions. If you purchase a returnless module, a regulator is not required.

[@corey87mattson41]

Holley update a video on how to install the latest software for this.

[@mopster1913]

Checked everything over and everything looks good fired right up but tries to idle at 2000 rpm then 6 or so seconds later dies??

[@SooleFit]

Having the same issue. Any solution you’ve figured out?

[@dirkwingert1101]

Tried to contact their support?

[@Kylersbuilds]

Will, I need Holleys distributor for this application or can I go without it and run my MSD distributor

[@HolleyPerformance]

You can still retain your current MSD distributor.

[@Kylersbuilds]

@@HolleyPerformance will it still have a the same tuning capabilities?

[@Kylersbuilds]

@@HolleyPerformancewill I be able to control the spark timing with the msd distributor still ?

[@GrumpyMike1981]

If you watch the entire video, it goes through all of your questions.

[@walterfurian8806]

Going by the video you can run the msd distributor but it will not control timing which is a blow to me as I run the full msd including the 6 AL box to control timing on my sniper 1 . @@Kylersbuilds

[@deronborghi5929]

Is there a sniper available, with more than 800 cfm ?

[@MikeBaxterABC]

Some guys are running a pair of Sniper 1's

[@THEAUTISTICALCHEMIST]

You should send 1 of them to replace the gen 1 garbage I bought that never worked and yall refused to fix. That would be a good business move !!!!!! 1💁

[@blakesuazo7031]

Sold mine after years of frustration! and was told I needed to add a lot of extra grounds and shielding for the wires. Mine was in a 4 speed and was told not to engine brake as it confuses the computer and would either die when you push in the clutch or lose iac counts and take off.

[@haywagon93]

They should definitely do a trade in program

[@GenV_Restomods]

Yes, Gen 1 had issues, just like Terminator X. We had our tuner turn everything off once we got it to where it needed to be. We blew out 3 O2 sensors because of over fueling. I think this version should work very well, but long overdue.

[@horsefly1020]

Can't beat a good old carburetor.

[@salvadorserrato4555]

Does the EFI 2 work on a 1993 c1500 5.7?

[@hendo337]

Any carb style intake in an SBC.

[@vernebrown4441]

I don't know how much stock to take in with this.When he says to disconnect the battery and he starts with the "+" and not he "-" BIG NO NO.

[@Ricks408]

The back order wait times in Australia are turning ppl away, my mate included.

[@HolleyPerformance]

Sniper 2s are in stock and ready to ship!

[@oilburner2752]

I just received my Sniper 2 upgrade kit (after investing almost $3000 Canadian on a total failure and struggle with a Sniper for the past two years (in for a penny, in for a pound) and the thing arrived (direct from Holley) with no fittings for the fuel pressure regulator and now I see in this video that it needs a pressure gauge on the regulator? Really?!?

[@MikeBaxterABC]

A lot of people just use their shop gauge for setup, and don't run a fuel pressure gauge constantly.

[@oilburner2752]

@@MikeBaxterABC I was told by a Holley Tech that one of the first things you should check when looking into running issues is fuel pressure so I need to know what it is at all times.

[@WayneKerrr]

Nothing but the 3 1/2 inch option available on the website :(

[@horsefly1020]

Aren't these technically TBI?

[@slick-px4pq]

Yes

[@stephenhans189]

Electronic does not like heat ! That's why the military, corporation's and telecommunication companies servers are chilled room .

[@Junkers024]

still .. Sniper 2 EFI Software Sniper EFI Software/Installer v2 Build:12 - Windows Vista,7,8,10 Compatible.

[@humbertoarellano2725]

You have to make some fuel lines those lines on the side looks ugly

[@justinnav]

Holley should really offer an exchange program for all of us that spent good money on the original, junk Sniper 1 if they hope to have future repeat customers. This thing is a complete piece of garbage. How about like a 75% off coupon and we can mail you back the old piece of trash Sniper we got screwed on.

[@frostycools1315]

sniper 1 was a ripoff

[@rickybailey7123]

Dud is talking 90 mph wow slow down and just make the video longer

[@dkreuzen]

Be advised... This video is an extreme oversimplification of a Sniper 2 install.

[@stelianghile822]

Will work the Holley Sniper on 4 cylinder engine ?

[@HolleyPerformance]

Sniper 2 EFI is designed to fit 4150 flange intake manifolds. If that is what you currently run, then yes!