How To: Install Terminator X EFI on any LS Engine

If you plan on installing a Terminator X on any LS engine, this video is for you! Terminator X works on any LS-based engine including common 4.8, 5.3, or 6.0 truck engines (often referred to as Lq4, lq9, LM7, L33, etc.)
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[@SloppyMechanics]

Really good overview guys, covering all the points!

[@jerrymc4571]

It would be nice to see a video for just the extras like, alternator connection, fans, starter & what not and how to connect them

[@speedwrenchmobilemechanics6089]

I literally just said the same thing!

[@ryanescourse]

Alternator and starter wiring included or need to buy it separately?

[@nathanielbolden5053]

Rite!...I was saying the same!

[@joeyevans6118]

The terminator comes without alternator wiring. You need to buy the 20$ 1-wire pigtail to wire to a 12v ignition source. The pigtail has a resistor to reduce 12v to 5v. If you wire it 12v direct, without the resistor it will burn up the alternator. The starter is also wired separately. It's grounded through the body, and the main power is connected directly to the battery lug. Your trigger wire for the bendix can be wired to the 12v out from ignition or a simple momentary switch. The fan wires to a universal 4 pin relay. And you use holley I/O's(inputs and outputs) in this case output. It can ground trigger the relay for the fan at set desired temp. Or 12v trigger the relay at set desired temp. +or- is an option for the output in the software.

[@tylerseabook9423]

You would think for the ridiculous price I paid for this thing it would at least come with the alternator set up. Starting to regret this more and more as I get farther.

[@paulmitchell8005]

This is great! I'm looking forward to purchasing a x-max soon and this makes me feel a bit more comfortable installing it myself. Many thanks from Australia!

[@robmespeedy]

I’ve been watching several of your videos. They way you guys script everything makes it so easy to understand how it works. It makes it less intimidating to go for the conversion.

[@FcDominick]

Never has a video fit me so well, also have a Ls powered Studebaker. It runs a stock ecu, I believe I need to change that to a terminator.

[@jord9308]

I follow Sloppy Mechanics and based on Matt’s example, I bought a Terminator X system. I replaced an aftermarket system and followed the instructions- easy installation and it fired right up. Very happy 😊

[@DavidGuyton]

Man this is AWESOME. Now I gotta get another car to LS swap.

[@kolemieux]

Tremendous Video - Great work and heading this way ASAP

[@FTGMotorsports]

Great video - after doing several Terminator X installs on NA, stroker and Supercharged LS's I would agree its that easy - Terminator X is the absolute best all around at this time

[@BAHRacingTeam]

How is easy it for someone with zero tuning experience? Putting a 6.0 LS in a 1989 mustang

[@usernotfound1423]

This is such a great video! Omg! You guys helped out a ton

[@STEEZO]

really great video, I do plan on using this setup

[@georgem.6136]

Very good overview! I was curious do you need to run a relay for the coils? I know i have seen that discussed.

[@danielward8649]

Great video, that made my mind up on what I'm doing for my swap lol

[@LogansGarage]

Just bough the terminator x for my 350z LS swap. I'm very excited to get it installed! Great informational video.

[@markstowell7771]

I was looking to do this also. How did it work out?

[@LogansGarage]

mark stowell It worked out perfect. I’ve never had an engine start so easily. I have a playlist of the build on my channel.

[@aztekwarrior518]

This kit is awesome and I haven't even fired up the car yet!

[@minitrucker04]

Got a Holley system on my truck and I love it!

[@gulfdawg2806]

minitrucker04 I’m getting ready to hook up my x max kit .. is it a certain throttle body needed?

[@minitrucker04]

gulfdawg2806 I have a drive by cable and you can use pretty much any tb. If u have a drive by wire I’m not sure on that one. I have never messed with a drive by wire.

[@chrissena3050]

Great video of. Was wondering how the Terminator X compares to the HP system?

[@TheReinoPaasonen]

Holleys tech videos are best in industry.

[@95turbostang21]

By far the best tutorial out there on the web

[@admiralfloofz658]

Think Im gonna go with this aswell. Got a 71 Camaro with an LS1, LS6 intakes, patriot heads and comp cam. Currently stock ECU and its idling really badly since its not tuned. (bought it like this)

[@C_71]

I don't get all of the complaints, it seems pretty straightforward!

[@POliver8888]

Can you tune more than one table at a time? Or do you have to save then cycle key? I’ve seen a KZbin video of a car being time where you can make multiple/live changes and it was really nice.

[@gasratzcustoms]

We are looking to install this on our next project. !!!!!!

[@Bodeesafa]

Legit video and awesome product. Need to get one...

[@HolleyPerformance]

Yes you do

[@sethdooley9195]

Putting my LS3 together right now. Can’t wait to get it fired up with a Terminator X. This video and Sloppy Mechanics have been very helpful.

[@ModernBeastx1]

did you get the ls3 going?

[@sethdooley9195]

@@ModernBeastx1 he'll yea, Terminator X is a great system. Very happy with it, engine is a beast in my thirdgen camaro

[@ModernBeastx1]

@@sethdooley9195 post a video man!! i got a 5.7 out of a 99 corvette im building right now just got all pistons and rods in going to finish building it next week and then i gotta save up for the terminator. What tranny you running?

[@sethdooley9195]

@@ModernBeastx1 Magnum F with a monster stage 2 clutch and flywheel.

[@ModernBeastx1]

@@sethdooley9195 😮‍💨😮‍💨 man I wanna see it! You should definitely make a video

[@SloppyMechanics]

Are you guys using new firmware than what you have listed on the site, my last few installs did not show fuel pressure or any other map sensors than 2.5

[@GlobalMediaInc]

Great Question, Matt!

[@motherlovinsnuffstar]

Dude now we all gotta know that shit!

[@Lee-rc5en]

Any update on this info? Did you cover it in one of your vids Matt?

[@raheenfrasier5227]

Great video

[@nosnerd1967]

EXCELLENT VIDEO

[@Oli-jw2hh]

Clear as day!!

[@ze_german2921]

Will it support A/C system like a Vintage Air? I know when the compressor comes on the Idle increases? Also can my Terminator Max 24 tooth be upgraded to DBW/54tooth down the road without buying an entire new kit?

[@hulkmadddhernandez6113]

Awesome details Holley!! You and matt from sloppy make Ls a great swap platform! 2020 is gonna be a great year

[@HolleyPerformance]

Thanks Hulk, we appreciate it!

[@cliftonbig66]

How great was your 2020

[@Tokenutha]

@@cliftonbig66 haha that comment aged well didn’t it

[@cesarconh895]

Excelente video

[@cameronludwig5285]

What about the alternator pigtail. Does that not come with the holly terminator x? And if no what is the solution? I'm running truck alternator. Think originally was a 2 wire.

[@thomasfortin8078]

Looking for part numbers for the Holley ultra low ram intake fuel rail hardware. Fuel line crossover etc. running the xmax kit with fuel transducer. An -8 feed and an -6 return. Looking to do the same as shown here.

[@selfmaderj4022]

cant wait to purchase mines

[@lsit7240]

Great video! I want to run the 7" screen (553-106) . Can I go through the wizard settings on that screen or do I need the hand held 3.5 screen as well??

[@RedWidowAdventures]

Hey I'm wondering that same thing! 🤔

[@russrocket2883]

I have a stock map sensor on truck intake, do I use that or do I use the ecm 1 bar map sensor and hook up a line to intake?

[@w41duvernay]

looking to do an 06 ls4 swap in a 88 fiero getrag 5spd spd , and eliminating the knock sensors. What Terminator x and wiring harness would I be looking at?

[@james_gordon16]

Really helpful! Saved video for when my buddy and I start the swap into his G Body, then my G body lol. What I am curious about is how do run the lighting system? And the radio etc. Do I just run the harness as usual then run power to the factory fuse panel? And run everything else off that? My car is gonna be strictly track (I think) but his is for the street. The fuse panel should be fine to run that stuff on its own correct or do I need to run the Holley to it somehow? Thanks! If there’s no reply in a week or so I’ll probably send you guys an email. Thanks.

[@trentdawg2832]

Does the tach give off a 4cyl signal? Or do I have to pull my dash apart again and set the tach to something different??

[@joelrushin4363]

If wanting do a swap with a 07 4.6 mustang and trans is there an adapter for trans? Was thinking using terminator x stealth with trans controller.

[@CQBWarfighter]

Can’t wait to get terminator con my rig

[@sbccoupe]

You put the MAT into the intake? I put mine into the middle of the cold air pipe between the filter and throttle body, Is this bad? 08 ls3 with 550-905 box

[@robmespeedy]

I want this. Seems user friendly

[@db2alex746]

Can I run the red wire that needs power when cranking off my fuse box with a fuse tapper ?

[@hpjunke]

It’s a good time to be alive ... 🤙🏼

[@Olds_Pwr]

Very informative video and I have learned a lot but I will have to say that there are no 326 cubic inch LS engines, there is a 325 though.

[@PeterHatch-mx7zc]

Have a lq9 t 400 gear vender in my 1974 c20 .have not done wiring will it work on my project

[@jaylewis3478]

Is it possible to use this and maintain use of the stock gauges?

[@MajorHoss]

So say I have a tv cable old tranny but want to wait to upgrade it so will I have to buy a whole new harness if I go to a electronic transmission?

[@jesuscasillas8255]

so like is the terminator x the one to use for a drive by cable throttle body ?????

[@WellOiledGarage]

Is there any way to add DBW to the standard 24x LS Terminator X or would I have to sell it and buy a NEW Terminator X Max?

[@Thatshitdead]

Do I need a lab top to turn or is it self learning

[@ivegonemad]

Can I still use my haltech branded racepak dash?

[@rogue_silverado9133]

I have a 2012 Silverado that's not swapped, it's using stock ecu, can I install this as a upgrade, I like the auto learning aspect and can't find any info other than ls swapping older vehicles

[@JoseCruz-qf6ui]

Is the iac position value adjusted with the engine on?

[@hashgirl1717]

If you have a Holley x max and it didn’t come with the handheld can you buy that and add it in or no?

[@Restructmusic]

I am having a problem with timing dropping to 0 as soon as i put the truck in drive and it pings when trying to move the vehicle. Any ideas on this?

[@ByrdAK47]

For the Elgin Sloppy Stage 2 what should you select the cam duration to? Below 235?

[@crfrider2005]

If i have a bone stock ls1 throttle body to pan and a t56 can i flash the base map on and essentially need zero tuning?

[@crownvalleytrans]

What's the make, model and size of the rubber bulkhead pass through grommet next to the ecu?

[@travisjalbert1542]

Will this control a electronic transmission?

[@ryanescourse]

Can this read the speed sensor for a tremec manual trans? I only see the auto option

[@irvingbar4569]

Do you still need to run a fuel filter regulator 58psi

[@let_it_ride9216]

The difference between x and regular terminator is just trans tuning Option and drive by wire correct?

[@GlobalMediaInc]

Sloppy Mechanics Sent Me Here!

[@havocracing6019]

Could you help me with a twin turbo startup. Decaped flex fuel injectors like 70lb/hr it will start now but shuts off seems like it's real fat

[@dbaineboy6974]

So is that 4input output harness how I get analog gauges to work?

[@dead_cyrious1876]

Which one would I use for an ls4?

[@fionakinsella9750]

hi my name is brendan I an from Ireland I bought a z28 LS conversion beautiful job done, car was starting but now will not start, its says it has cleared all the system I was woundering if you could help me please. many thanks

[@MOY5462]

I’m looking to buy a kit motor is 6.0 gen 3 from a van running a 4l60e. I want it drive by cable what kit do i buy?

[@ben185814]

Is this terminator is compatible with ac compressor for 87 R10 ls swap?

[@chickenfoundation9323]

Can this work with an LSA and 6l80e?

[@nameless875]

HOLLEY I need help 😫 handheld just flashes white just like in this video when he powers on but mine keeps flashing can't get it to do anything else but flicker the white screen.

[@johnhamilton6205]

Can an aftermarket alarm/remote starter be installed with this system?

[@jonathonsaavedra843]

Im looking to run this system on an ls swap, ill also be running water/meth injection, the w/m injection has a failsafe ill be installing that drops boost and timing if it notices a problem in w/m flow, how do i get this to work with this system if this already controls boost and timing

[@alexanderknight7793]

I'm going to be doing a 5.3 swap on my Hyundai Genesis, something like this looks great for making the wiring aspect easier.

[@slowgoat6089]

Why put a LS in that? 🤣

[@alexanderknight7793]

@@slowgoat6089 Why put a LS3 418 in a Genesis? Because its badass.

[@dannuccio5842]

​@@alexanderknight7793 sounds like a waste of an LS 😂

[@alexanderknight7793]

@@dannuccio5842 sure bud, kick rocks.

[@alexanderknight7793]

@@dannuccio5842 let me see the raggedy pos you have one in😂😂

[@chrishansen7004]

Will Holley ever have support for the newer transmissions like the 6/8/10L90 transmissions on gen 3/4 motors? I would pick up the terminator in a heartbeat for my project if I could do so. I'm very sick of getting gapped by fords just because the immense advantage having 10 gears has. these 10 speed transmissions are a whole different driving experience.

[@danielworks123]

6 and 8 speeds are junk and 10 speeds all you hear about is them always searching for gears

[@jrwstl02]

@@danielworks123yes, exactly. Fast cars run 2 speeds, and the fastest cars (top fuel) run 1 speed.

[@95turbostang21]

Are you guys going to do a video covering Ford Foxbody install I'm having a issue with my IAC plug Holley harness has 4 wires for iac and Foxbody iac has 2 wires so I guess I'm losing a output not to mention Holley dual boost control valve uses up 2.

[@emend93]

I live in a state where they do plug in OBD2 emission testing....i want to do a ls swap in a obs tahoe and i was wondering if there is a way that this will still pass emissions

[@maxstatarcos7584]

Nope... i live in CT and you can’t use Holley for emissions.

[@bjonesmoto2424]

Where does the O2 sensor plug in at ??? Did I miss that ?

[@lennyroyce3496]

I just ordered mine!

[@mikeyacosta4757]

Do these have an OBD2 reader?

[@StevenLNew]

Just curious if anyone may have an answer for My square body ls swap. Some days it runs great. Yet some times when l 1st start it... (happens often) the air fuel will jump to 35% and will hardly run. I turn it off immediately... I do this, sometimes up to 10 times, before it reads a normal 13.5% and runs fairly smooth. Also at times when just cruising around... I will feel my engine hiccup a little. I started watching it and noticed when it does hiccup it because it jumps to a 25-35% air fuel mixture, just for a split second but then runs fine. Not sure what could be causing my issues... Any help for this jar head would be appreciated.

[@jefferycheek5914]

Does this system not use a MAF?

[@richmondstgarage7147]

Where can I put my injectors on the software? I have siemens deka 80s and they're not an option

[@chancecolwell3736]

So all that will plug into a ls9 without any problems

[@masmas6846]

What are you using for manifold air temp sensor? LS Engines have built-in air temp sensors into the MAF sensor... How are you using these MAT sensors?

[@HolleyPerformance]

this kit comes with a plug for manifold air temp. it can be installed in the intake tube or in the manifold.

[@hobotechMASTER]

is there an adapter harness or patch harness of some sort so i could use my existing ls1 harness to plug into terminator x? the reason being is that my current harness is already integrated with my body/chassis harness

[@slowgoat6089]

Did you figure it out?

[@vagabond3045]

Hey I need the white pointer and the bracket to secure the handheld are there part numbers for those

[@HolleyPerformance]

Give our tech department a call and see if they can send one out. Those aren't sold as individual items, they come with the kit. 8666-464-6553

[@jesusrivas2760]

Can I set up new tps from dash monitor? If so how?

[@williamfranco9771]

can any one help with red light on #6 on terminator x changed crank and cam sensors as to holley tech instructions still no change

[@adrianlaverick8040]

Will this control VVT?

[@savagenomore]

wish it had an option for the 6l90 transmission

[@hotshotdain4475]

Maybe I missed it so does it come with accessories harness like alternator , starter , transmission etc or do you have to buy any of that separate ?

[@bryangifford8792]

Never a response?

[@tylerseabook9423]

It’s all separate because the $3000 you spend on it for some reason they don’t think you should get the basics with it seeing as it probably cost them $50 to make one of these

[@miguelg3537]

Fuel injection only ?

[@Blue-mx8dx]

Very curious do I need the factory ECM? I want to LS LQ9 6.0 Swap my Blazer never done a LS Swap before but wanted a basic clean set up instead of having a wiring nightmare so does this need the ECM sense it controls the motor or do I still have to base the ECM?

[@vava5427]

The harness already comes with their ecm

[@martygrajeda3457]

Can you run a T-56 transmission?

[@jrocha383ws6]

Hey what about AC controls and electric cooling fans signals?

[@HolleyPerformance]

It'll do all of that!

[@RaceMentally]

Why did you delete the knock sensors? Just bought the kit and would like to know. Thanks!!!!!

[@HolleyPerformance]

Knock sensors are very sensitive and take a lot of time to calibrate properly. It isn't usually beneficial to spend the time and effort to use them on an engine with an aftermarket cam, etc.

[@RaceMentally]

Holley were installing it on a sand car this weekend. So hopefully all goes well. Thanks for the response. I hope it all plugs in and fires off :)))