What's new
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

EZ EFI 1.0 Upgrades?

Chevy305

Chevy305

6 Lug 14bsf Status
 Premium
GMOTM Winner
Joined
Jan 23, 2006
Posts
12,947
Reaction score
2,687
Location
New Hampshire
Calling all FAST EZ EFI 1.0 owners. I've been reading about some upgrades now available to the 1.0 system. There is now an upgraded touchscreen handheld interface that is available to retrofit to replace the original minimalist handheld controller. Does any one on here have one?
http://www.fuelairspark.com/fas/fas...pgrades-first-generation-ez-efir-systemshtml/
It allows for a customize able real time gauge view and offers more tuning adjustments that the original handheld didn't have. Basically it now allows for hot and cold start enrichment adjustment and finer cooling fan on/off adjustment. Here's a good article explaining it:
http://www.dragzine.com/news/a-fast-ez-efi-full-color-handheld-upgrade-that-youll-want-to-do/



But wait there's more!!!

They now also have a XFI Street ECM upgrade available too. They have all the features of the XFI computer plug in tuning that plugs right in place of the original EZ EFI ECM.
http://www.fuelairspark.com/fas/xfi-street-engine-management-system-retrofithtml/
http://www.cpgnation.com/forum/thre...eet-retrofit-kit-and-xfi-sportsman-ecu.26632/


Sounds pretty promising to have full laptop tune ability in a plug and play ECM. Granted it's $600 for the ECM vs $300 for the touchscreen. I got excited and bought the touchscreen upgrade a few months ago before finding out about the ECM upgrade. I'm trying to figure out if either is worth it or both. My long term plan is still LS Swap but in the meantime this could clear up the few shortcomings of the EZ EFI system. Namely the warm up open loop tuning is what I'd like to improve. What do you think?
 
I'm going to be upgrading my 2.0 to the Sportsman ECU. Solid roller cam doesn't make enough vacuum for self learning. FAST said I could trade-in my 2.0 ECU and the difference is about $600
 
I know there's a handful of the EZ EFI owners on here but I can't remember who so if you know of anyone please tag them.

@76zimmer
 
dont' have a clue Glenn? I need to do some tuning on it though.
 
So I went and installed the upgraded handheld touchscreen. It is really so much nicer than the original analog screen.

IMG_20180528_154421.jpg

It comes with a much longer wire harness to adapt it to the analog connector. It does require a lead to a power source that is ignition hot and crank hot. I spliced the lead into the pink wire a few inches from the ECM.


The original wire (gray) compared to the new wire: it's probably a good 4-5' longer.

IMG_20180528_153931.jpg

IMG_20180528_154029.jpg




I love the master gauge screen I can see every sensor and calculated value in real time.

IMG_20180528_155131.jpg

So i adjusted the crank fuel +1 and warm up fuel -1 and it does seem to have helped my warm up troubles. I plan on playing with it some more to see how close i can get it.
 
Last edited:
That's the touchscreen that comes with the 2.0 system. Nice, right? I keep mine on the master screen all the time too.

What's funny is that the EZ TCU I got for my 4L80 uses the old screen.
 
AJs72K5 said:
That's the touchscreen that comes with the 2.0 system. Nice, right? I keep mine on the master screen all the time too.

What's funny is that the EZ TCU I got for my 4L80 uses the old screen.
Click to expand...
Ya its funny how they still sell units with the old screen.

Were you going to upgrade to the XFI ECM?
 
Chevy305 said:
Ya its funny how they still sell units with the old screen.

Were you going to upgrade to the XFI ECM?
Click to expand...

XFI Sportsman ECU is plug and play with the EZ 2.0 harness and throttle body. Has fully tuneable and self learning modes
 
Good info Glen, thanks.

A friend has that handheld for his EZ 2.0 kit, do you think I could just plug it in to mine to change any of those new parameters once, or is the conversion unit special software?

I never use the handheld anymore (I would if I thought there was a problem, I always keep it in there) and I don't have any starting issues. But if I could adjust a couple other parameters once I might do that. I'd do full laptop before I spent money on another handheld.

If you are going LS then I highly recommend the Holley Terminator(HP or Dominator ECU depending on your requirements) system as it doesn't require a separate box for the ignition and has WAY more options. He got the EZ 2.0 for his 6.0 LQ4 and during installation we realized it's not even sequential injection, just batch fire. It works just fine I just expected it to be sequential since it obviously knows the cam timing with both cam and crank sensors and the ignition control for the coils (in the separate ignition box).
 
folkenheath said:
Good info Glen, thanks.

A friend has that handheld for his EZ 2.0 kit, do you think I could just plug it in to mine to change any of those new parameters once, or is the conversion unit special software?

I never use the handheld anymore (I would if I thought there was a problem, I always keep it in there) and I don't have any starting issues. But if I could adjust a couple other parameters once I might do that. I'd do full laptop before I spent money on another handheld.

If you are going LS then I highly recommend the Holley Terminator(HP or Dominator ECU depending on your requirements) system as it doesn't require a separate box for the ignition and has WAY more options. He got the EZ 2.0 for his 6.0 LQ4 and during installation we realized it's not even sequential injection, just batch fire. It works just fine I just expected it to be sequential since it obviously knows the cam timing with both cam and crank sensors and the ignition control for the coils (in the separate ignition box).
Click to expand...
I don't know if a screen off of the 2.0 would work. It might be the same hardware but the software is different. I don't think it would hurt to try though. You just need to adapt the harness plugs as they are different.

I don't really use my screen either, but then again the original analog one was a POS And a pain to have to keep plugging it into the cigarette lighter. This touchscreen one is much more useful and automatically comes on and off with the ignition and I have it set to jump to the master display page. But still once all the settings are dialed in I'll probably toss it into the glove box and in case I need it out on the road.


That's crazy to hear that the 2.0 EZ is batch fire even with all the I/Os. I would assume the 1.0 computer is batch fire as well if you were running it on a MPFI manifold.
I will go LS at one point but I'd very likely go with the OEM injection. The Terminator and Dominator ECUs do some cool things but for the price of those systems I'd just stick with OEM.
 
Chevy305 said:
I don't know if a screen off of the 2.0 would work. It might be the same hardware but the software is different. I don't think it would hurt to try though. You just need to adapt the harness plugs as they are different.

I don't really use my screen either, but then again the original analog one was a POS And a pain to have to keep plugging it into the cigarette lighter. This touchscreen one is much more useful and automatically comes on and off with the ignition and I have it set to jump to the master display page. But still once all the settings are dialed in I'll probably toss it into the glove box and in case I need it out on the road.


That's crazy to hear that the 2.0 EZ is batch fire even with all the I/Os. I would assume the 1.0 computer is batch fire as well if you were running it on a MPFI manifold.
I will go LS at one point but I'd very likely go with the OEM injection. The Terminator and Dominator ECUs do some cool things but for the price of those systems I'd just stick with OEM.
Click to expand...

Yes I assumed the 1.0 was batch fire even with 8 injectors, not sure it even has an input for cam sync. However, since the 2.0 uses the cam and crank sensors and controls the spark it obviously has the information for sequential injection, yet it is still batchfire, kind of dissapointing.

You can get the Holley ECUs a LOT cheaper if you get it through the terminator lineup. Since you don't need trans control if you get it during the Holley days sale its probably about $1700 for the whole kit to control an LS with the HP ECU. It is totally worth the price, I think the Dominator ECU is the most capable one out right now. Although if you just want a basic running LS and don't need all the bells and whistles then it isn't really necessary.

I am still Happy with the EZ 1.0 system, its been running great for several years now. There is only one spot I wish I could tune, occasionally right about 5% throttle low load just above idle there will be a slight hesitation. Its not there at more throttle but I think I could only tune it out with a laptop. I've tried changing acceleration enrichment and a little richer A/F at idle and cruise helped, but sometimes it still comes back in certain situations. It doesn't sound like the new handheld would help me there? To be honest its such a small problem I just kind of ignore it, I have never had any starting issues, even after it sits for months. Hot, cold, warm, doesn't matter, it always starts fine so far.
 
folkenheath said:
Yes I assumed the 1.0 was batch fire even with 8 injectors, not sure it even has an input for cam sync. However, since the 2.0 uses the cam and crank sensors and controls the spark it obviously has the information for sequential injection, yet it is still batchfire, kind of dissapointing.

You can get the Holley ECUs a LOT cheaper if you get it through the terminator lineup. Since you don't need trans control if you get it during the Holley days sale its probably about $1700 for the whole kit to control an LS with the HP ECU. It is totally worth the price, I think the Dominator ECU is the most capable one out right now. Although if you just want a basic running LS and don't need all the bells and whistles then it isn't really necessary.

I am still Happy with the EZ 1.0 system, its been running great for several years now. There is only one spot I wish I could tune, occasionally right about 5% throttle low load just above idle there will be a slight hesitation. Its not there at more throttle but I think I could only tune it out with a laptop. I've tried changing acceleration enrichment and a little richer A/F at idle and cruise helped, but sometimes it still comes back in certain situations. It doesn't sound like the new handheld would help me there? To be honest its such a small problem I just kind of ignore it, I have never had any starting issues, even after it sits for months. Hot, cold, warm, doesn't matter, it always starts fine so far.
Click to expand...
I never had any starting problems with my 1.0. It was only on warm up. Like reving the engine a few times when it's cold and cold out would make it load up and stall out. And driving it while still warming up, the return to idle would stumble and occasionally I'd get a back fire through the intake on 2nd to 3rd shift when just getting back on the gas. I've tried making a whole bunch of adjustments and have the IAC count at idle down to 10 and accel fuel to +2. That seemed to be the best and most drive ability. The new touchscreen has helped some with the warm up quirks but I'm thinking the XFI ECM will allow me to tune these problems out.
 
One other trick I had up sleeve that I read about on the CPG Nation forum is that my dual plane intake might be causing poor fuel distribution.
http://www.cpgnation.com/forum/thre...with-dual-plane-intake-vs-single-plane.25871/

Think about it, no factory fuel injection motor has a dual plane intake, they are all single plane. You kind of have to throw out everything you know about dual/single plane intakes when it comes to injection. Think about it, on a dual plane with a carb each bank is divided to only see 1 or two barrels and each intake pulse has a direct effect on the venturies and therefore pulling in a finite amount of fuel for each pulse. While a TBI just haphazardly fires injectors at a certain rate to achieve the right mixture with no regard to distribution. So then with a TBI style injection a single plane manifold would even out the intake pulses and would distribute the fuel more evenly. Is this theory sound?
 
That's funny. I found that same article Glenn because I had been wondering about single vs. dual plane. There's a similar one floating around on the Holley forum too. The problem isn't the dual plane, it's the plenum divider. Might explain part of my tune too. I was planning on going with a single plane Edelbrock when the engine goes back together because of that.
 
Last edited:
Oh, and I'd bet good money the handheld hardware you got is the same as mine...just with different software.
 
Mine runs good enough and it doesn’t get cold enough around here to have starting or running issues. And I agree, my handheld stays in the glovebox until there’s a problem, more or less cause it doesn’t tell me sh1t anyway lol.

I too am ready for an engine swap. I’m just saving pennies.
 
AJs72K5 said:
That's funny. I found that same article Glenn because I had been wondering about single vs. dual plane. There's a similar one floating around on the Holley forum too. The problem isn't the dual plane, it's the plenum divider. Might explain part of my tune too. I was planning on going with a single plane Edelbrock when the engine goes back together because of that.
Click to expand...
Goo to know that I'm not only one who is going down this route.
 
I don't have time to read that article right now, but if I knew I was getting EFI I wouldn't of gotten the dual plane. However, I don't think its worth changing at this point. Keep in mind most RPM "Air Gap" dual plane Edelbrock intakes have the large chunk missing out of the divider to connect the two sides together again. In fact it's quite possible that's the main reason they make more power than the old RPM, as that used to be a trick you could do to make more power with them with a performance engine, it enlarges the plenum volume for both sides.

Glen, when you upgraded the handheld did you have to update the software inside the ECU? Or the handheld just worked right out of the box?

7562.jpg
 
You must log in or register to reply here.

Latest Posts

Top Bottom