HOLLEY SNIPER EFI?! Worth all the HYPE and PRICE?! *FULL REVIEW*

My full in depth review on the Holley sniper EFI system!
Don’t forget to drop a like a comment!
Follow me on Instagram ‪@cobrabuilt‬

[@Matthew-wn8oq]

I was never a fan of pre 86 mustangs but the stance and look of this one is beautiful. Well done man!

[@cobrabuilt]

Thank you!

[@a1hntr]

Great explanation and demo. Thanks for posting.

[@cobrabuilt]

🤘🤘

[@Matt211881]

Great vid. I have the stealth. I should be to the point to get the motor in and hooked up in a few months. You vids help out a lot. Thank you so much.

[@cobrabuilt]

Hell yeah!

[@79beans347]

I could use the hell out of that $100 card on my 347 loving the channel man you are doing very well

[@cobrabuilt]

Hell yeah!

[@pippendog1]

Welp , you answered my questions before I even thought of them , Thanks !

[@cobrabuilt]

Glad I could help!

[@johnmcmullen456]

A few years back I converted my 1974 Olds 350 from its problematic Quadrajet to the Sniper. From web forum posts I learned how to easily modify a computer controlled Olds 307 factory HEI dizzy to accept the Sniper timing control. Very pleased will the overall drivability improvement. I do strongly suggest getting the cable to use a laptop for programming, a progressive linkage kit sold by a Sniper vendor to avoid abrupt light throttle application, and taking advantage of the Sniper timing control function to totally dial in fuel and spark.

[@cobrabuilt]

They’re a great system!

[@viktorviktor659]

Just saw your video and may I say SOLD! Thank you for the input, I have an 85 mustang GT stock with a holly 650 carburetor but have been hesitant on upgrading to the EFI but after seeing your video I'm more than happy to upgrade. PS you have a very nice bitching ride my dude.

[@cobrabuilt]

Hell yeah! You’ll love it!

[@McGarveyton]

I came here for Holley sniper info...and got a new appreciation for the fox body as well...yours is the first to make me think, wow that's really nice looking! (Wasn't a fox body fan before)👍 Anywho I just ordered the complete sniper and hyperspark setup for my 66 gto...tired of the bog and hesitation with the 30 year old Carter AFB comp series it has on it now.

[@cobrabuilt]

Hell yeah! Thank you!

[@bpowersman5000]

I got the master kit and the full hyperspark set up. very close to being finished but I am super impressed with the whole setup. You are spot on about following what Holley recommends, definitely makes life easier.

[@cobrabuilt]

100%!!

[@tadpolemania6781]

I just got you your 500 likes. Great job. Love your videos

[@cobrabuilt]

Hell yeah! Thank you!

[@rdy2run332]

Yep i have the terminator x in my fox that manages a 427 stroker and it does great. Great system so far

[@cobrabuilt]

Super good system!

[@CashedOutCars]

Awesome video and awesome car. I just bought a 302 swapped Miata that’s carbureted, one of these might be in my future!

[@cobrabuilt]

That’s bad ass!

[@johndelta00]

I used to daily drive a turbocharged SBC s10 with a home-built blow through holley 750cfm (hp main body), no choke and got good fuel economy even with a stalled th400/9 inch rear. Carburetors are still a viable option if you are willing to put in the necessary work. That being said, being able to adjust air/fuel mix without getting gas all over your hands might be worth the extra money in itself with the sniper. Thanks for the video. My next boosted set-up will probably end up with one of these handling the fuel mixing/spark duties.

[@cobrabuilt]

Hell yeah!

[@tnet6969]

Just finished my install on my '71 Chevelle with a 511 stroker. Completely changed the car! I can reach in the window now, turn the key and it fires right up. Used to be cold natured and difficult to start.

[@cobrabuilt]

Hell yeah! Awesome to hear!

[@fletch_ames_43]

You’re video was the final straw, I’m ordering the master kit. Thank you

[@cobrabuilt]

Hell yeah! Highly recommend it!

[@shanemcmillion2618]

The sound of the of that EFI make 's when you got your foot to floor is bad ass

[@cobrabuilt]

🤘👍

[@adamfawlk9257]

Holley efi is great I have the terminator x on my 89 and it's been fantastic the whole time and driveability is top 👌

[@cobrabuilt]

💪🤘

[@VictorSanchez-kp9nt]

Great video someday I'll grab up one of those goodies.

[@cobrabuilt]

Well worth it!

[@FleastangFox]

Just completed my build. R block 347 with a Novi 2000. I am using a Super Sniper with the Hyperspark setup. I have had zero issues and love the throttle response. For blow thru you have to use an external regulator on the return side and I just removed the internal regulator. I was particular on wiring, wire routing and grounds. I also depinned all unused wires and put in the cavity plugs to keep it weathertight. Most people will not used 50-65% of the wires provided so it’s looks intimidating but it’s not bad to install.

[@cobrabuilt]

Sounds bad ass!!

[@davidmckay3782]

Question did you use the stock fuel pump from the mustang!?

[@austinjenkins8544]

I have the base 650 sniper on my 408w and it’s doing great for me. Put down 531hp and 528tq to the tires with it in my foxbody.

[@cobrabuilt]

Frick yeah!

[@I_like_turtles_67]

Looking at that kit. But I want to install a flex fuel sensor. So I can run both e85 and premium fuel.

[@Turbo4Joe363]

I love that the Sniper gives you the option (with the right distributor) to control the ignition timing! I've read that you can make a custom ignition advance curve/map. The Sniper base tune's ignition curve/map has some sharp transitions that can be smoothed out for better performance. Have you messed with a custom ignition advance curve/map?

[@cobrabuilt]

I have not!

[@stang1973]

Currently installing a sniper unit on my '73 coupe, 351w, didnt have enough $$$ to do timing control, yet..... cant wait to fire it up

[@cobrabuilt]

You’ll love it! You don’t always have to have all the fancy stuff! It’ll still run perfect!

[@aguyinnc2865]

I'm 65 yrs old, grew up in the 60's and early 70's, and very old school. But I really love your car!

[@cobrabuilt]

Appreciate it! Thanks for watching!

[@theoutlaw2395]

I'm 61 yrs old and grew up cruising Van Nuys Blvd in the 70's in the San Fernando Valley, CA.

[@theoutlaw2395]

@@cobrabuilt I'm getting ready to Super Sniper my 67' Coupe. I'm tired of fluttering the gas pedal until the engine gets a little heat in it to hold it's own idle, and engine pulsing at a stop light about ready to stall. For your Mustang not being a first generation, it does look cool.

[@jsimmonstx]

@@theoutlaw2395 - When you do it, don't get the master kit, because the pump that come s with it is not reliable. Get the basic kit and a new gas tank that supports an in-tank pump. You'll be a lot better off. Also, get the Sniper Stealth. It requires that you also purchase an external pressure regulator, but that's okay because the one in the basic sniper is highly problematic. Most people end up removing them and buying an external one anyway.

[@theoutlaw2395]

@@jsimmonstx I looked at the Stealth unit and I like the carb look and will get that. I plan on getting the Aeromotive EFI drop in tank for my 67. It has an in tank pump and the electrical and fuel return are at the fuel sending unit. This weekend is the Good Guys show at the Del Mar fair grounds here in the San Diego area. I hope the Holley guys are there to ask a few questions about the Stealth. I saw on Google where a guy gutted his mechanical fuel that gave the look to his Stealth EFI like it was still carbureted. Good weekend to you.

[@willievanhoesen4455]

sweet cobra, waiting to hear from holley about if this system will matchup with the digital pro dash for a 78 Fairmont pro-tour/ road course vibe mix.

[@cobrabuilt]

Love me a fairmont!

[@celloprof]

I wonder how those compare to a old 1993 tbi, I know those sniper efis are new, but how much better could the MPG be?

[@Sloppyjalopy123]

That thing pulls like a freight train! Sounds great 👍

[@cobrabuilt]

Thank you!

[@briansickler8204]

I like your cobra and have been following your channel for a couple months now. I was wondering how you got the Sparco Ford Performance steering wheel to work I have a 83 GT and I want to get that steering wheel but don’t know what to get to make it work any help would be awesome thanks.

[@cobrabuilt]

Honestly I just asked in a Facebook group.

[@bobmeeker3694]

i have an 82 GT and i think they are the best of the fox bodies! beautiful car

[@cobrabuilt]

Thank you!

[@dannymccarty344]

I like your mustang. Some day i want a black one like yours. I bet you get a Lots of thumbs up, right? My brother has a blue one. He put a jet engine in his last spring, and the chicks really dig him.

[@cobrabuilt]

Oh for sure! Definitely a head turner!

[@grade-aland2388]

New to the channel, love your car. What tires are those? I’m looking at the Holley super sniper setup.

[@cobrabuilt]

245/40/18 Toyo R888r’s all the way around!

[@corvettefever360]

The Holley Sniper is absolutely an excellent piece. Both my brother & I, a few friends also have installed & used several versions of the Sniper & love them. The 650, 1250, with an MSD box, the Hyperspark. No problems. We have also used the Terminator, & Dominator, & we love the Holley EFI systems. Everyone talks about the Terminator & Dominator, so many think the Sniper is much more inferior, & this is not true. & while the other 2 are definitely more advanced, the Sniper isn't entry level by no means. Especially Snipers after 2020. They were definitely gone thru & upgraded from the earlier versions. They are the best out there. Honestly even over the "higher end", triple the price systems. While these are good & have some extra options / configurations, etc etc, which in some real technical situations may be great, but is honestly almost debatable, especially for most out there. Across the board nothing is touching the Holley systems. Also when tuning Sniper thru laptop, go thru & learn the hook up & tuning for Terminator & Dominator. It will matter. Because unfortunately most focus on the other 2, Holley included, & mostly because it's almost expected that those with Sniper will let it self tune for the most part, & so not as much info & effort is put into Sniper info & tuning format. Long story short there are videos to walk you thru this, it's hard to explain in text, just look up everything on the 3 systems. Even with over 20 years experience building high performance engines & doing custom fabrications I learned a few things. Applying Terminator info & tuning thru that format to be applied to Sniper, will allow you to do even more with Sniper. Especially in elaborate engine builds, turbos, external waste gates, superchargers, NOS, etc The Sniper, can be used & ran on a Terminator system. And there's a version of the Sniper comes with the Terminator, or Sniper Terminator X, for a TBI setup. I chose to use the Sniper 1250, yes the TBI, for my twin turbo C4 Corvette. And not to save money, because I have over $100k into this C4 & its only now almost finished. This is a full on custom front to back, & everything has been redone, reworked, etc. But the powerplant is a Dart fully forged 384 Stroker with all the goodies, making 740HP & 835 TQ on only 10 PSI. It hasn't even been broken in yet, nor turned up.

[@cobrabuilt]

🤘🤘

[@richardclary6267]

Gonna get cozy and read this novel 📖 and enjoy a bottle of Jack Daniels🍾 for the Bullshit it's gonna take most of the week to read it all....Hope it's good! ❤🥃 😊

[@6spd85notch]

Hey can I use my msd rtr billet distributor and 6al2 box , rpm air gap dual plane ? I’m using an Aed 750 and it’s pretty much spot on after jetting it down a couple jet sizes. What I don’t like about carbs is if you slam on the brakes with the clutch in. Sometimes it’ll cough a little due to the floats. I’m definitely interested in the sniper.

[@cobrabuilt]

Yes sir! You can!

[@andycole7403]

Love the Cobra stickers on the gauges. I am restoring my ‘79 Cobra 5.0 A/C Auto. I want to upgrade performance but retain stock appearance. I have an AOD and 8.8 with 327 gears. Should rebuild the stock motor or order a crate motor? Looking to get at least 300hp and have decided (thanks to your video) to go with the Sniper setup. Any guess as to what the above mentioned setup would run in the 1/4? BTW the in car shots while driving are cool. It looks to accelerate very quickly and handle very tight.

[@cobrabuilt]

I like things with warranty’s. Helps me sleep at night lol. I’d buy a crate motor but that’s just me!

[@andycole7403]

@@cobrabuilt thanks for the reply. I greatly appreciate and respect your opinion on the matter.

[@theguy9234]

Nice. My uncle had a new 84 gt ho 5speed that was black.

[@cobrabuilt]

Hell yeah!

[@davidmckay3782]

How did you hook up your MSD BOXand did you use the little black box that came with it.

[@cobrabuilt]

Just looked up KZbin videos. I’m definitely not a wiring guru lol

[@gregorystewart3066]

Love the car. Reminds me of my '79 pace car. Great fun car

[@cobrabuilt]

Hell yeah!

[@jsimmonstx]

I got the 4150 stealth (better for your typical drop-base air cleaner). Before installing it, I made sure my electrical was 100%. I did NOT use the strap-on O2 bung - I had a bung welded into the exhaust. I didn't need the master kit because I already had an in-tank pump. I already had a MSD 6-AL2 ignition box and a MSD coil, so all I needed was the Hyperspark distributor. I didn't use the (recommended) MSD plug wires. Instead, I'm using Ford Racing wires (almost $100 cheaper). The sniper kit is NOT for your casual car guy (Holley bills it as a DIY kit, but it really isn't). You need to have experience with automotive electrical and fuel systems, as well as sufficient tools and mechanical ability.

[@cobrabuilt]

I agree

[@stevebrown6175]

I noticed the Mad Science Motorsport sticker on your workbench. I got my Sniper Stealth from them prior to their merge with EFI pros. I have not added spark control but my experience has for the most part been the same as yours. Did Adam do your tune?

[@cobrabuilt]

He use to yes. Was very displeased with how it drove and how long it took to receive a tune

[@stevebrown6175]

@@cobrabuilt He is pretty recommended on the sniper forum so wonder what happened? I checked his FB page and noticed my car is the Red Firebird right below yours when you had the turbo on. Small world huh?

[@theguy9234]

Im thinking about the quadrajet kit for my 79 k10. Im concerned about the sensor failure issues that many people talk about.

[@cobrabuilt]

Any sensor that goes bad they sell at any parts store. I’ve only ever had the TPS sensor go bad out of the 4+ years of having it

[@MrPerez65]

I wish I would have done this but I decided to do the tubular kmember and five lug swap 🤦🏽‍♂️

[@cobrabuilt]

Couldn’t go wrong with what you did either!

[@deviantrebel6326]

How long have y’all ran the Sniper? Common problems? Thinking of buying it but I also have a Speed Demon carb, and I’m familiar with carbs.

[@cobrabuilt]

I’ve had it for 3 years now and no issues!

[@CorvetteSUV]

I have installed 3 black Holley sniper units. All 3 were replaced because of the same issue. They sprayed the black powder coating inside of the unit. the easiest way to see is to take off the left side cap that the return fuel line connects to. then pull out the diaphragm that's behind it. You will see it has black powder coating inside of it where it is exposed to gas and it will peel. 2 of the 3 just wouldn't run after the screen on the diaphragm clogged the 3rd saw fuel pressure issues and just went WOT on me with zero throttle control, that was scary. If you have a black unit check that out, Holley replaced all mine with a brand new one but they send out a new one with the same issue. I would recommend not getting powder coated units for replacement.

[@cobrabuilt]

I will check it out!

[@Chris-Rife]

How do these stack up against say Trickflow or Victor intake? Holley Sniper gonna get more gains with nice set of heads can cam? A friend told me to check one of these out... thus I am learning.

[@cobrabuilt]

Very well!

[@Westsideautomotive]

Will the sniper work with the stock ford electronic ignition? And would it work with a Chevy hei? I’m thinking of getting one for my fox and one for the wife’s blazer

[@cobrabuilt]

Yes sir!

[@jlem8968]

Do you know if the factory duel snorkel air cleaner will work with the sniper?

[@cobrabuilt]

Yup! It fits!

[@GearBangr]

Have you tried switching between fuels? Like pump 91 to e85? I got my sniper for a 1200hp+ set up using the terminator x Ecu with the Efi carb.

[@cobrabuilt]

Yup! Have had it on E85 before!

[@GearBangr]

Does it self learn? Or you do a e85 dedicated tune?

[@randytrivitt6539]

Same problem with people thinking that it is the sniper fuel injection it is actually the intake air gaps on the actual intake for the carburetor it's self!! That will cure the problem more than likely!! For the sniper fuel injection system!! Problem solved pretty much unless it is in time in these snipers fuel injection itself like you are explaining!? Right !.... 👍👍

[@cobrabuilt]

It ended up being that the secondary butterfly’s were staying open a life bit. Clocked the return spring another turn and she’s been good since!

[@trentdawg2832]

Beautiful car

[@cobrabuilt]

Thank you!

[@StLMikie]

I dig it.

[@cobrabuilt]

🤘👍

[@jimmydean3376]

Hey man I'm looking to get one and think I am but one big question for me is the gas mileage, google and all that said 18.5 and all but was wondering what you got. Only wondering gas mileage cause I gotta travel far everyday

[@cobrabuilt]

This get 100x better gas mileage that my old carburetor

[@speedygonzalez6454]

What kinds of better miles per gallon get i expect with that kit..approximately

[@cobrabuilt]

Uhhhh, kinda hard to say lol

[@metalrocks1]

does it have a vac advance port for a distributor?

[@cobrabuilt]

Yes it does!

[@Thes550guy]

Damn I only read at a 3rd grade level. Guess I can’t install one🤣 good video buddy!

[@cobrabuilt]

Oh trust me I know!

[@benjamincompian2562]

Good Build

[@cobrabuilt]

Thank you!

[@arodderz]

Awesome stuff man. In your opinion, what would it cost me to convert to this set up. Currently have 383 SBC full roller ,750 Cfm holley with vacuum secondarys, Holley electric fuel pump.

[@cobrabuilt]

$1500 all said and done

[@arodderz]

@@cobrabuilt thanks brother. To get rid of nasty starts, get better drivability and mpg.....sounds good to me. 👍

[@cobrabuilt]

Hell yeah! You’ll love it!

[@HWYHOG1]

Sweet car

[@cobrabuilt]

Thank you!

[@davecrockett3405]

I like that EFI but, the driver in my wants to know about that stretched 379 in the background

[@cobrabuilt]

That’s not mine lol

[@davidlindsey8739]

ok I was watching Nick tune a carb and he did the best he could Guy took efi outta the box 1st pull Matched the tuning the guy did on the carb on Dyno he took carb apart rejetted ect --They were talking about tope end running lean No here is the question How dose the unit know if your running lean on top end Like I said I;m looking into same unit for my 73 z Thanks for any info geat video and one bad ass car you have

[@cobrabuilt]

Runs like a raped ape up top!

[@wrxsubiemod]

Crazy, I got a 82 5.0

[@cobrabuilt]

Hell yeah!

[@bobforpples]

Holley Sniper EFI says he can gap my carburetor. -Cobrabuilt

[@cobrabuilt]

😂😭

[@Diondo26]

I see your hand is back in the Vid .......Holley stuff works nice ..i run a Terminator on mine ..but use a Laptop to fine tune that Thing..Handunit is nice but Laptop Tuning is much better..!

[@cobrabuilt]

🤘👍

[@salvatoregiovanni8967]

Just out of curiosity, did you pay out of pocket for all the Holley EFI stuff or receive a sponsorship or compensation from Holley in any way? I like to know these things when I’m watching any product reviews. Thanks.

[@cobrabuilt]

Unfortunately not sponsored by Holley. Fucking should be though!

[@salvatoregiovanni8967]

Hahaa I hear ya. I know companies send a lot of KZbinrs free product so I’m always curious how biased or objective any reviews I see really are. Keep up the good content.

[@danboutin8700]

Do you have the AOD in that mustang? If you do how did you hook up the TV cable?

[@cobrabuilt]

My car is a TKX manual

[@erictimmins9387]

Nice fox, I want to see what's under that ex hood!

[@cobrabuilt]

Ex?

[@TheSlim93gt]

Just watch your learn percentage. If you have it at say 50%, when an input goes haywire it can leave you in a mess. The handheld is good for watching data and that's about it.

[@cobrabuilt]

👍

[@chrisedwards2624]

Which trans do you run?

[@cobrabuilt]

TREMEC tkx

[@anthonycardona3141]

Great video, you using stock ecu

[@cobrabuilt]

Thank you!

[@anthonysiler4938]

Have you ever had this beauty to the track? Just curious on what she runs in the quarter 🤔 by the way, liked 👍 😉

[@cobrabuilt]

11.89 @119!

[@anthonysiler4938]

@@cobrabuilt hell not bad bro!! Keep the vids coming, im addicted lol 😆 👍

[@dannybarlow4256]

I’ve heard a lot of trouble with them …ecu crapping out

[@cobrabuilt]

9/10 times it’s from people wiring them up wrong. I’ve had mine for 3 years and worked on plenty of customer cars and all worked awesome!

[@ronaldrey8474]

Didn't you take HOLLY SNIPER off your car ?? If yes please explain...

[@cobrabuilt]

Nope, still running a sniper to this day

[@ronaldrey8474]

@@cobrabuilt awesome t.y. for replying cause I had people telling me they break after several heat cycles especially Vegas Climate. Your car is very very easy on the eyes , great conclusion & colors too . ✌️

[@jeffreyevans3981]

👀

[@cobrabuilt]

👀

[@erik_cruz]

9:55 I do agree people need to pay close attention and follow the instructions when installing these systems. But please don't use solder on wires... ever! lol The problem with using solder in automotive wiring is that solder is super brittle. Brittle material combined with the fact cars vibrate, you're just leaving you're self open to a bunch of "ghost" issues down the line.

[@cobrabuilt]

I know some people hate butt connectors but I love em, especially the ones with heat shrink

[@erik_cruz]

@@cobrabuilt Yes, the ones with the heat shrink work very well. And you're right, there are quite a few people that cringe at the thought of butt connectors. I think most people think about the ones they get at autozone with the hard plastic. Those suck ass lol.

[@79beans347]

I was like #47 as in 347 😁 that is the lucky number, If I got the gift card I would use it on a set of valve springs because I ordered a kit from falcon and everything was comp cams brand except for the springs, the most important part🤦🏻‍♂️ and it is stopping me from making power over 5700rpm and my cam is good til 6500+ , does your brother have the kinks worked out of his yet? Those hood pins look sweet man 👌🏽 that was a very nice touch that you added to the hood of the car , that thing is just badass anyway you look at it 👍🏼

[@cobrabuilt]

Thank you!

[@79beans347]

@@cobrabuilt you're welcome, that thing rolls out, when you were doing those pulls , it was rolling out fast , I would have probably peed a little if id been in there 🤣😂🤣

[@rodneygodin7773]

What heads u got my old Edelbrock Vic jr came with spring to hold 8,000rpm stock, swapped them out for afr, them springs good for 7200

[@79beans347]

@@rodneygodin7773 ive got some victor Jr. Knock offs pretty much I bought a set of 210 cc bare procomps ported them and bought my own springs and valves to go in them and ended up with some really good ferrera valves and comp everything else except for the springs and when I saw them all bagged together and cheap looking I should have backed out and ordered a good set but I got in a hurry 🤦🏻‍♂️ man you got the good stuff , if those victor Jrs need a good home they are welcome to move in over here 😂🤣 but yeah I need some springs really bad it made good power at 5700 422.5rwhp " and fell off after that so I know that it is a spring issue, heads and single plane are ported

[@rodneygodin7773]

I do havem, there full race ported & flowed 320 @680 lift & that’s my current cam specs, I’d part with them but there for solid roller

[@stickytoy1207]

Should got a Honda civil with a hole in the hood and a laptop in Passenger seat 💀

[@cobrabuilt]

😂😂

[@stickytoy1207]

Bro fr I wish I could afford the upgrades but I’m getting an 83 foxbody soon 💀 just putting subs in it and superchargering it

[@mikeyt3940]

It takes more than a screwdriver to tune a carb sonny. And there is more bad reviews on the sniper system then good. If the ECU takes a shit you are stranded, unlike a carb you would most likely be able to get home.

[@cobrabuilt]

What you said is not true at all. It’s like anything in life. People only write bad reviews when they’re pissed and in this situation 9/10 people have a wire hooked up wrong. People never write good reviews because like myself they are happy with the product and continue on with their day. Carbs suck

[@mikeyt3940]

@@cobrabuilt Carbs have been serving their purpose much longer in time then efi. It takes talent and knowledge to tune any carb on a internal combustion engine. It has been proven on the dyno that a carb can perform as well as efi performance wise when tuned properly. Yes with efi you get easy cold starting. efi has its place. I have even considered🙂 trying a sniper set up, Maybe some day.

[@JumpCutThis]

But the real question is- how will this react in the Mexican wilderness?

[@cobrabuilt]

🫣👀

[@jasonmurdoch9936]

Carburetors a whole lot easier than this

[@cobrabuilt]

Not even close, you’re out of your mind if you believe this 😂