Holley Terminator X Max

[marjama]

As long as you are getting the X Max it should. The trans controller doesn't care how you meter the air and fuel into the engine.

 

[rcmbronc]

It looks like it should be just need the correct harness. I would verify this with Holley though.

 

[latrucker]

So I went ahead and ordered the Holley Terminator X-max. Just in case anyone is interested in doing the same thing it is part # 550-1316 that works with the 351w and 5.0 engines. It is meant for the 2V Mod motors but has everything needed for the EDIS with the exception of wiring in a couple of connectors from the explorer harness. Has coil banks that will adapt to the wasted spark system from the explorer EDIS. Comes with the EV1 injector harness and controls 98 and newer 4R70W. I ordered it from efisystempro.com and they are great to deal with. Answered all my stupid questions and recommended the correct system for my setup. They also offer help during the installation process. Also have a forum for all things efi, just wanted to give them a bump as they were super helpful and shipped super fast (1 hour after I ordered). I let everyone know how it works out once I get it installed. Seems the factory explorer stuff is becoming a pain to get programmed if you have a modified engine so this might be a good alternative that wont break the bank.

 

[marjama]

So you went with that P/N specifically to get the EDIS system integration? I've been planning on the 550-944 system but I'll take a look at the other options as well. Hadn't really considered a multi-coil setup. Look forward to hearing how it works out for you!

 

[latrucker]

So you went with that P/N specifically to get the EDIS system integration? I've been planning on the 550-944 system but I'll take a look at the other options as well. Hadn't really considered a multi-coil setup. Look forward to hearing how it works out for you!

Go to there website and fill out the recommendation form and Scott will reply really quick with the package that will work for your setup. The one I bought has a 8 coil bank system but will only use 4 due to the wasted spark setup on the EDIS. The other ones made for the 351w and 5.0’s you have to use a dual sync distributor and the dizzy is what I’m trying to get away from. I wanted coil packs so that system was the best one to do that.

 

[mlogan24]

So I went ahead and ordered the Holley Terminator X-max . . .

Any update on your setup?

 

[duffymahoney]

The pro flow and most likely the terminator have no way of knowing how much air the engine is actually moving, so the base tunes would have to be perfect and not account for a lot of variables. Controlling fuel and some spark is about all the ecu can really do without knowing the air volume. Are people doing road tunes with their pro flows etc.. Or just being happy with the stock tunes?

 

[bmc69]

The pro flow and most likely the terminator have no way of knowing how much air the engine is actually moving, so the base tunes would have to be perfect and not account for a lot of variables. Controlling fuel and some spark is about all the ecu can really do without knowing the air volume. Are people doing road tunes with their pro flows etc.. Or just being happy with the stock tunes?

The base tunes do not have to be "perfect" since the HP and Terminator ECMs adapt very quickly to achieve the target AFR values throughout the table. It does takes a fair amount of driving under all conditions to completely "fill" the entire fuel map table with accurate numbers that don't need much modifying on the fly. I've been very impressed with this generation of Holley EFI packages. I challenge them too...the last engine I started with an HP installation was a 245 cubic inch flathead V-8, supercharged. ;-) Using a 3-bar MAP sensor on that one because supercharged.


The older Commander 950 systems had no "self tuning" whatsoever and, worse, were typically not delivered with wide-band O2 sensors. That system did require that you start with a fuel map that was pretty darned close to begin with.

 

[DirtDonk]

How's the 400 project coming Bill?
What are you using for the intake/induction setup?

Paul

 

[bmc69]

How's the 400 project coming Bill?
What are you using for the intake/induction setup?

Paul

The 400 for my '78 is sidelined, waiting for body and paint work on the ttruck. I have a new 1000 sf addition to my shop underway right now that adds a paint booth and body work space. The intake for that is one of the conversions I've made many of...pic below.

A more current project is the building of two new 534 Super Duty V-8s, twin turboed, that are going to use the Super Sniper setup on the factory 4v intake.

 

[Broncobowsher]

The base tunes do not have to be "perfect" since the HP and Terminator ECMs adapt very quickly to achieve the target AFR values throughout the table. It does takes a fair amount of driving under all conditions to completely "fill" the entire fuel map table with accurate numbers that don't need much modifying on the fly. I've been very impressed with this generation of Holley EFI packages. I challenge them too...the last engine I started with an HP installation was a 245 cubic inch flathead V-8, supercharged. ;-) Using a 3-bar MAP sensor on that one because supercharged.


The older Commander 950 systems had no "self tuning" whatsoever and, worse, were typically not delivered with wide-band O2 sensors. That system did require that you start with a fuel map that was pretty darned close to begin with.

So true. What a huge difference going from the Commander 950 with narrow band O2 into the modern wide band self learning (in my case Sniper). The sniper had about 3 setting to get it started, desired idle speed, cam type, cubic inches. Several years of owning the Commander 950 and I will say I never did get it dialed in all the way. The Sniper was more dialed in fuel trim in 30 minutes of driving than the Commander was in years of tweaking.

 

[bmc69]

So true. What a huge difference going from the Commander 950 with narrow band O2 into the modern wide band self learning (in my case Sniper). The sniper had about 3 setting to get it started, desired idle speed, cam type, cubic inches. Several years of owning the Commander 950 and I will say I never did get it dialed in all the way.

Ha haa..I can relate to that! My '69 EB trail rig with 408C had the 950 and I eventually got tired of driving around with the laptop in the pass seat and called it "good enough". LOL. So many tuning variables..so little time. It was reliable as a hammer though...never had a single EFI-related issue in the 10+ years I beat on it.

 

[toddz69]

So true. What a huge difference going from the Commander 950 with narrow band O2 into the modern wide band self learning (in my case Sniper). The sniper had about 3 setting to get it started, desired idle speed, cam type, cubic inches. Several years of owning the Commander 950 and I will say I never did get it dialed in all the way. The Sniper was more dialed in fuel trim in 30 minutes of driving than the Commander was in years of tweaking.

Tim - what vehicle did you have that you ran the 950 on?

Todd Z.

 

[Broncobowsher]

Tim - what vehicle did you have that you ran the 950 on?

Todd Z.

The red 69 Bronco.
State of the art when installed. First one to get an O2 sensor. Wideband was voodoo stuff at the time.

 

[toddz69]

The red 69 Bronco.
State of the art when installed. First one to get an O2 sensor. Wideband was voodoo stuff at the time.

Gotcha - I didn't remember what you had on that truck.

Todd Z.

 

[bmc69]

The red 69 Bronco.
State of the art when installed. First one to get an O2 sensor. Wideband was voodoo stuff at the time.

I installed my first 950 system on my '69 trail rig in 2004. Dang..almost 20 years ago!! I feel old....

 

[toddz69]

The red 69 Bronco.
State of the art when installed. First one to get an O2 sensor. Wideband was voodoo stuff at the time.

Didn't the first gen Pro-Jection systems that we had in the '90s have an add-on O2 sensor setup at some point too? Or am I not remembering that correctly?

Todd Z.

 

[Broncobowsher]

Didn't the first gen Pro-Jection systems that we had in the '90s have an add-on O2 sensor setup at some point too? Or am I not remembering that correctly?

Todd Z.

Not me. I started with the O2 sensor. Now that I think about it, I was running pre commander 950. Projection-4di. The 950 came out just as I was installing the projection.

 

[bmc69]

Not me. I started with the O2 sensor. Now that I think about it, I was running pre commander 950. Projection-4di. The 950 came out just as I was installing the projection.

If I recall correctly, the Commander 950 was not a lot different than the 4DI. I think Holley realized they had a decent product - far better than any of the original ProJectoin systems, and wanted to get a "fresh start" in marketing....get out from under the ProJection cloud. Then they further improved the Commander firmware, added MPFI option, etc etc.

 

[latrucker]

Any update on your setup?

Sitting in a box in the floor for now. Waiting until my kids are out of school for the summer to start the project. I’m ready, haven’t driven it in 3 months……killing me!!!