How to Tune Acceleration Enrichment in Holley EFI // Terminator X, HP, Dominator & Sniper 

This video helped me a lot. I saw a guy doing this live on a dirt track car. He had the afr line rising and falling while he drove it and gave throttle stabs. Then he adjusted it on the fly. He was on a Link Ecu platform. Thanks for all the work you put into these videos. Rex in New Zealand.

Video length is ok! You cover everything on point easy for someone to understand

Boom! Been waiting for this one. I figured these adjustments would be 90% by sound and feel, but it’s nice to know how to set up the log and what to look for to confirm what we’re hearing and feeling. I never thought to set the target AF flat so any change is an immediate feedback on if it wants more or less. I’ve been trying to overlay target AF with actual AF and it’s been running me in circles as far as interpreting results! I dig the longer videos. This one was laid out very clearly, and sometimes you just gotta nerd the fuck out on this stuff 👍🏼

Great video Joe. I will watch this one again when I get to this part of the tuning. I'm Just starting so I'm finding tuning has a steep learning curve. You provide a great resource. Holley should pay you.

Another fantastic video Joe. I’ve learned a lot of great stuff watching your channel. I would love to see some stuff on primary fuel tables. Thanks for taking the time to make these. They seem to get better with every video.

Best Holley videos I've seen. Nothing wrong with the length! You'll be at 10,000 subs in no tme!

Awesome info Joe. As always thank you for sharing your knowledge. Your edits always make me chuckle :) 👍👍👍

Video lengths are perfect man, people who take the time to look up these videos to correct the issues theyre having, have nothing but time! Keep it up bro 👍🏼 very helpful

Really good tech, and then the added bonus of your real world experiences with it. Thank you.

Great stuff. I don't see this level of detail in others' EFI videos. I really don't think your videos are too long. You covered this really well, I don't think there as any repetition that was not beneficial.

Dude I love your videos. I'm getting a 24 Hours of Lemons car with a Sniper dialed in and your videos are the *perfect* level of detail. You have this humble deadpan delivery, but you do a _superb_ job of explaining all the settings/variables at the right level of detail. Like, you could be a Mechanical Engineering professor if you wanted to be. Thanks for posting these!

Thanks for taking the time to share your knowledge and experience. Great video!

Hey Joe you have explained this very simple. This has been the most simple video to understand that I have come across. Thank you.

Great video! Can you do a video on fuel tables next?

good info great job im taking your class programing this winter to fine tune what i learn from hands on and your videos here thanks for what your doing man

I've been waiting on this for awhile, 70% why I subscribed 😅

Awesome info! Learning how to tune terminator and this explanation is very helpful in understanding acceleration enrichment!

Thanks for taking the time to make this video. I have a a small lean off idle or while preforming a gear change. Happens for a second them clears and runs what I would consider fine. Just installed Term X Stealth and the base Holley tune seemed pretty close but there is definitely room for improvement. I'm no tuner . Your videos are a tremendous help. I have a simple sbc 383 NA with a pretty good size cam . I'm just now getting familiar with the Holley software and logging.

super helpful explaining what the manual doesn't put into understandable terms. Thanks Joe!

Beautiful, you cut the UM's out thank you sir. Looking alot better. Way easier to follow Thanks JOE! Your the man!

Hey Joe, loving your content, so down to earth and we experience so many of the same feelings you have when tuning. Can you do a video breaking down Holley Terminator/Dominator Boost setups? We do alot of plain ol' 3 Port single solenoids and it seems like the Holley has quite a few issues with a simple setup.

Keep it Up joe, your videos are awesome

Thanks brother this video was much needed. 🤘🏻

On hard acceleration blow off pops on 420 mega blower. At 2,250 rpm to 4,000 did the tps adjustment on the lower end of the tps added a little more fuel and now it runs a lot better and no popping the blow off 👍 Thanks for the videos !

Another informative video! I'm really looking forward to one on transmission tuning! Also would love something with a little more detail for a noob when it comes to tuning the fuel table. Example: what numbers are you actually looking for and how do you know how to adjust each one? Thanks again for your very useful content!

Good work man, thanks for showing us

Wait, you only have 5kish subs? Dang man, you deserve more!

Great content Joe thanks!

Good stuff. On my E85 540 BBC big cam drag car, I ended up adding a bunch of fuel in the main fuel table at tip in just off idle. When I went to tracks with big altitude changes, tip in was horrible until I did this. I race at tracks at sea level to over 6000 feet and it took me a while to get it to run right everywhere.

another great vid ! love the comedy

Thank you sir I've been waiting for this

Awesome video. Thank you for sharing.

Thank you man, Thank you!

Good vid 👍

Another great vid!

Thank you for the great video

That was also really interesting to see what an efi car does when you take away all accel enrichment. Would have been cool to see what it did with a load. If this had been a carburetor the engine may have have stalled. Lets you know how good efi is at filling in holes in the fuel curve.

One of my first cars back in the day was a 93 mustang 5.0. When making passes at the strip I would feel like the car was faster at 90% tps than it did at WOT. At the time it was baffling and now that I'm older I realize it was simply a bad tune issue. To go back in time and know what I know now lol

Why you don’t have more subscribers is crazy.

Came from the T3 course. :)

King💪❤

Good video, sometimes AE tuning can be a black art, best thing ive learned is to make small changes at a time

unrelated but its my biggest problem right now, whats the number 1 reason a terminator x wont fire the fuel injectors? im pretty sure my grounds are good. awesome content as always

I'm extremely interested in a video of a pump gas car going to E85 or E90 etc... I like your videos gives me so more insight into tuning.

Holley needs to kick you something. You make it make sense!! Great information!

I’m looking into a rich spike within a half second of blipping the throttle off idle. AFRs seem to hit 11.0 no matter what I change and then decay back over a couple seconds to the commander afr. Any insights would be greatly appreciated. Love the channel and information you put out.

Best Quote, Courage is being yourself everyday in a world that tells you to be someone else.

On my sniper I used to use a linear accel enrichment curve 0-100 as of recently I have dropped the curve to 0-60 and the difference of power seems unreal. Been slowly changing this curve and now when I stab it I can feel the ass squat and feel the car get up on the tire. I had squatting before but never the feel of rubber banding the tire, almost like a sling shot

Can you make a video on how to control boost, boost controllers & how to route your wastegate/ vacuum lines accurately to control boost effectively. Mainly on ls Engines would be very helpful! TIA

Hey mate, can i just say if you spell out the goal at the start that would make it perfect. In this vid for example, the aim is to get the AFR to match the target AFR during tps changes? But yeah, awsome vid. Love how you run through the features but then actually do a real life log example.

Awesome video! Can you make a video on IAC tuning it’s kicking my ass

This is my next step. Got the base pretty well sorted but the car leaves like a dog then quickly catches up. Also have a weird thing were if you blip the throttle at idle it usually stalls.

What would be an acceptable afr to see on a good acceleration event? Would it be something that would not be noticeable or would it be a slight rich spot in the data log of say maybe 1 afr point.

I spend a large amount of drive time on my personal cars tweaking these tables because manual with lightweight flywheels. I do a lot of mountain driving and road course track days and heel toe downshifts can be almost impossible out of the box because it’ll just bog when you smack the throttle so quickly. On an auto car I barely touch them unless they’re just noticeably bad.

Thanks for the video. I have this fairly dialed on my car (stock headed 5.3.. cam.. 85mm.. billet atomizer 3s). My buddy’s car I’m struggling with. (37x ci ls with big rec port mast heads, twins, old Moran style billet atomizers). When you stab the throttle and it falls ok it’s face for a sec, wideband pegs lean, then it cleans up and pulls like a monster. Tried adding a ton of acceleration enrichment and didn’t clean it up. Then got it me thinking maybe it’s throwing so much fuel at it that raw fuel is passing through and I’m getting a lean reading. Going leaner didn’t help. Thing is driving me nuts Both cars setup for 8:2 peak and hold. Annoying

If you raise or lowing the roc blanking values does this effect the point where the ecu shuts off closed loop on entering ae mode?

Hi, this is a great video, very informative, thank you! Wouldn't be beneficial, if we set up the base map zeroing acceleration enrichment and when the base map is stable we set that up too? I am struggling with AE now at tip-in situation, where my car is leaning out and couldn't figure how can I avoid it, the leaning out is stays but I get a pig rich AFR a few seconds after that :( do you guys have any suggestion what parameter should I adjust to handle this? Thanks!

HI SIR!!., CONGRATULATIONS WITH YOUR INDORMATION ABOUT TUNNING. I HAVE SOME PROBLEMS WITH MY HOLLEY TERMINATOR X MAX INSTALED IN A MUSTANG MACH1 OF 1971. ARE YOU THINGKING COME TO SPAIN SOME TIME... ? CHEERS

Thank you. I have a problem with the Holly Terminer X computer, I bought a user, and there is some problem in the basic TBS setting of the computer, and I would like to fix it. I always have the TBS 105 tuning. 5. 19. Or the problem appears to me in the girls and their numbers are wrong, it seems that it is converted to electric and he does not want to return to a wire.

How critical is the injector phasing? I know injector size plays a big role but Is there a good number that works with most street setups?

250 duration cam v8 low rpm cruise bucking, thoughts? probably just to low of rpm for the cam to handle?

As always added a little more to my notebook motor going in the s10 within next 2 days

I’m running a Holley sniper and with a 383 stroker, 4l80e, and 3800 stall, I have 95 % of the tuning down, but my only issue is on converter lockup. When I’m at say 25% throttle going through the gears, when the converter locks up it goes from about 60 kpa, then spikes to 95-100 for a split second I get a rich shudder condition, I’m thinking it’s the map AE vs coolant adding too much fuel

I hate asking questions. I’m sorry. But I think I’m getting somewhere. As far as my fuel table goes and adding fuel. I did a couple cracks of the throttle and I believe I need to add fuel and just keep testing. Correct?

New subscriber here. Good job on the videos! Absolutely Killin it! Thank you! I did have a thought on the map based AE enrichment in where it might really come in handy if it can be configured this way. Since it's based on a map reading it could be useful in situations where guys are changing boost levels allot from low to high psi, it could be used to help add extra fuel to give a larger safety blanket for constant pressure changes guys make while at the track instead of constantly changing the actual 3d map. I still feel like the tune needs to be configured correctly for the setup but this might be useful in a quick fix type situation for guys looking to make a few quick pulls without an entire Dyno session. Thoughts on this?

I just fired up my ride over the weekend using a sloppy tune for start up. It idles good but stumbles and sometimes dies unless i roll up the throttle real slow to ablout 1200rpm then ots fine. It also doesn't want to start without pedal when it's up to temp.

Love your vids Joe! I got a question, I have a 5.3 with a small cam 218, my kpa is always at 93-100. Even when cruising. My car is open header right now and I don’t have a cold air intake. Could those be a reason why my kpa is always at 93-100

Does Holley have any rpm dependent AE? Feels lacking compared to other systems.

I need to re-watch this with my laptop and holley software open...

when I put my ROC at 7, it stops using the closed loop compensation. is that normal? My TPs reads 0. It disables learn and compensation. When i press F1 it says in the manual, 7 is a good start.

I wonder if you turned up the Advanced Control on closed loop would get rid of the delay in AFR in the log

How to setup and adjust bc pid would be good.

So this is basically accelerator pump table, moving beyond that would be pilot/main jetting characteristics as in relation to a carb application, correct?

Show us your technique to tune the Fuel Tables Joe .

Anybody else notice the numbers from the rows vs graph don't match up?? AE vs MAP shows 250+ going up to zero in the row above but 2, 4, 6, 8 in the graph below

holley is on all the Monster Jam engines !!!

I have a turbo 5.3 setup and im curious how to get the complete tune right. So my question is do i set the timing safe across the board and iron out base fuel then go back and adjust timing through out rpm's? New to tuning and just figuring out the correct steps in the correct order. Using holley HP by the way. Keep the videos coming and I don't think video's are to long. if anything i hate when i watch something i want to learn and video is to short and not enough content.

I have an issue of just off idle it will rev and take off. i have messed with the iac park and i just dont know what i dont know. any advise? have you seen this before? it is a mild driver sbc.

I have a lean spot when I stab the throttle no matter what rpm I'm at . off idle , cruising at a steady speed , back roads highway; it doesn't even seem to matter. What would you recommend ? It's a holley super sniper stealth, blow through turbo, 351 windsor. Small cam ,afr renegade heads and victor jr intake manifold.

What would make us understand better about enrichment is if you did a comparison on a car you tuned and shown us each table before and after you tuned it to show the changes you made and the direction each table took to achieve that perfect tune while giving us an overview in order of how it was accomplished. I know each car is different but deciphering the way each table is actually adjusted against the Holley base tune files gives us an idea of the steps you took too if you do it in order too as Holleys tables are basically in no specific order yet the tuning strategy requires an order to get the perfect tune. Maybe they should of structured their software to be alot more user friendly like they claim the system is but really isnt or there wouldnt be 3 Holley EFI based cars in for tuning at the same time IMHO seeings my local tuner has been in business 32 years and has only tuned 11 Holley based systems in the last 5yrs .

My problem is when I stab it, she coughs and dies. How do I fix the base table?

I purchased a set of injectors that are supposed to be high impedance and it came with a tune sheet to put in the computer. Car runs like shit floods motor. I set it to low impedance and lower all of the fuel table settings car runs better. Why is that

Whats a good afr to target on acceleration enrichment.

Could you not do a high speed data log of rpm increase vs tps vs pw and ignore the o2 sensor readings? This is how it done in ms3pro but other systems I am sure its similar. I am am sure holley could do over 200 frames a second log?

When you go to the holley training classes Tom tells you the same thing that he just said about the numbers.tune the engine to what it likes period

had the holley term x system on a daily driven Ls since 2019- With the system set at default open loop "learn % " , I keep having problems with it leaning fuel out at idle when engine is cold. After building a new base fuel table , running it at a default % for a 5 days.. town, highway, various ways , I then reduced the open loop Learn %. and didnt have any problems. Engine was running really well in all realms. I recently increased the open loop learn % to a middle ground of 20% because it was a bit rich at idle when cold. .. and the system did it all over again-- leaning fuel to extremes to 17-23 AFR at cold idle, causing the engine to stumble while warming up. it goes away if I blip throttle .. and goes away once engine reaches 130F ?? Guess I will remap the idle realm of the fuel map.. or should I just screw with the idle enrichment chart?

What state you in ? All depends on what state your in could have some work to send you...

Are you using OBS to record the screen?

The only problem I have is not having a car with this system or any holler system to learn on

What city do you have your shop?

One of the things I've always struggled to understand is flex fuel afr calculations. I know alot of people say when you run flex to keep it on gas scale. Im curious how to calculate what afr is safe depending on ethonal content. On my old stock computer setup with 70% ethonal, I took 70% of the difference between stoich (14.7-9.1=5.6 5.6/.3= 1.68 9.1+1.68=10.⁷⁸). I feel this isn't correct way of going about it and it gets kinda muddy when I was trying to setup fuel for boost, I didn't know if it was a linear add 70% or if I'm overthinking it. so for the time being I just ran 93 because I don't understand it well enough to trust my numbers.

I heard it with my ears too...😂

were r you located?

OK 500 sensors are not necessary buy a new car if you are totally insane and you hope you can handle pro stock good luck

Zzz Zzz Zzz