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Efi preference.: AFI vs FAST/EZEFI

Smokinthehippies

Smokinthehippies

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So if the price difference wasnt an issue.
(Affordable fuel injection -$1000ish, EZ/atomic/ etc units are all about $2000 for the kits)

Would you go with one vs the other?
It seems like the self learning and tuning setup would be the way to go.
I was up til recently leaning towards the AFI bcuz they list an option to control the 4L80e, but contacted them this week and the boss man there said they are no longer going to support the OD trans setups bcuz of complications with the installs.

So now I'm thinking to spring for the better(in theory) injection setup.


Any opinions boys? Thanks!
 
I went through a few opinions when I was considering FI as well....I was looking at MSD and FAST....the simplicity of the MSD was a single fuel line and less wiring to hook up, but drawbacks were no fuel loop, a pulsing fuel pump to maintain pressure, and injectors that protrude into the throttle bores.
The FAST I chose because of the fuel loop (return line) adjustable regulator, a proven system (I didn't know anyone that had personally run the MSD) It adapted to my needs better (my own custom fuel tank (DIY4X) and externally mounted pump) and I got the best price through Atlantic Speed... http://www.atlanticspeed.com/ProductCart/pc/viewPrd.asp?idproduct=6175&idcategory=172#details

I used the base kit, as I had other fuel lines I thought I was going to use, but ended up buying stainless braided hose after finding out my previous lines weren't going to work out.
 
76zimmer said:
I went through a few opinions when I was considering FI as well....I was looking at MSD and FAST....the simplicity of the MSD was a single fuel line and less wiring to hook up, but drawbacks were no fuel loop, a pulsing fuel pump to maintain pressure, and injectors that protrude into the throttle bores.
The FAST I chose because of the fuel loop (return line) adjustable regulator, a proven system (I didn't know anyone that had personally run the MSD) It adapted to my needs better (my own custom fuel tank (DIY4X) and externally mounted pump) and I got the best price through Atlantic Speed... http://www.atlanticspeed.com/ProductCart/pc/viewPrd.asp?idproduct=6175&idcategory=172#details

I used the base kit, as I had other fuel lines I thought I was going to use, but ended up buying stainless braided hose after finding out my previous lines weren't going to work out.
Click to expand...

Oh forgot to mention that, I definitely want to go return style.

Actually ill add one more separate question to this thread.

I currently have dual tanks, and wish to keep them. Does that mean ill need to plumb the inline pump up in front of the diverter valve? If so will it being that far away from tanks be an issue?
 
New kid on the block. Sounds cool.

http://www.streetlegaltv.com/featur...el-shows-off-unique-throttle-body-efi-system/

quickfuel-a1-312x234.jpg
 
Check out holleys stuff. Way more features from what Ive researched and the ECU can be used to run anything from their throttle body like these to LS motors, to totally custom multiport. Theirs is self learning, supports 200-600hp out of the box and has boost and nitrous support. Not to mention the user interface that allows you to self tune/smooth the auto learned tune to totally tweak it w/o having to know the ins and outs of tuning.
 
Just remember Steve, there's no CARB number on any of these for your year truck. So every two years, you get to make the truck run worse in order to pass visual. :doah:

Unless something changed :dunno:
 
K85 Octane said:
Just remember Steve, there's no CARB number on any of these for your year truck. So every two years, you get to make the truck run worse in order to pass visual. :doah:

Unless something changed :dunno:
Click to expand...

So that would be a +1 for the AFI. I know my smog guy said the tbi setup would pass.

But on that note ill be out of California before my smog is due so good there. Good point though.
 
Fast fuel is the way to go for the money and Ease of set up. Also there is another one out there called ATOMIC but fast is the way to go unless you have the money for the Edelbrock Pro Flo system.
 
Steve,

If you want something to integrate the 4L80E computer into a single solution you can also check out the Holley Dominator EFI....

I haven't checked pricing in a long time so I have no idea how it stacks up with the newer offerings. The idea of sharing sensors between the transmission and EFI is appealing to me, as does the idea that the tuning between them is tightly integrated. From what I remember you also have complete control over timing maps (if that's something that interests you)....that's a feature that is typically missing from the entry-level self-tuning EFI kits.


-G
 
Greg72 said:
Steve,

If you want something to integrate the 4L80E computer into a single solution you can also check out the Holley Dominator EFI....

I haven't checked pricing in a long time so I have no idea how it stacks up with the newer offerings. The idea of sharing sensors between the transmission and EFI is appealing to me, as does the idea that the tuning between them is tightly integrated. From what I remember you also have complete control over timing maps (if that's something that interests you)....that's a feature that is typically missing from the entry-level self-tuning EFI kits.


-G
Click to expand...

i like it, but thats definitly further into install than i'm prepared to delve. i'm really looking for a bolt on turn the key and watch the magic happen.
actually right now it looks like a toss up between the holley terminator and the EZEFI.

i guess i still havent seen anything really against the AFI TBI setup but i keep leaning away from that even though it is cheaper.
 
Greg72 said:
Steve,

If you want something to integrate the 4L80E computer into a single solution you can also check out the Holley Dominator EFI....

I haven't checked pricing in a long time so I have no idea how it stacks up with the newer offerings. The idea of sharing sensors between the transmission and EFI is appealing to me, as does the idea that the tuning between them is tightly integrated. From what I remember you also have complete control over timing maps (if that's something that interests you)....that's a feature that is typically missing from the entry-level self-tuning EFI kits.


-G
Click to expand...

I don't understand why people over look the dominator system. Holley's system has the most features and uses. It also has the simplest tuning software. Its also the most bang for the buck. $1800 gets you 600hp of support, the most features, boost, knock, and nitrous, plus the timing control.
 
Smokinthehippies said:
i like it, but thats definitly further into install than i'm prepared to delve. i'm really looking for a bolt on turn the key and watch the magic happen.
actually right now it looks like a toss up between the holley terminator and the EZEFI.

i guess i still havent seen anything really against the AFI TBI setup but i keep leaning away from that even though it is cheaper.
Click to expand...

What about the AFI and go with a stand alone 4l80e controller? I think Car Craft did a side by side review of several controllers not long ago and most did very well.

EDIT: Found it.
Car Craft March 2012
http://www.carcraft.com/techarticles/ccrp_1203_transmission_controllers_tested/viewall.html

I too just want a plug and play system, for a near stock BBC (RV cam and headers - that's it- but with a TH400 not 4l80e) and think the AFI should work well. I like the fact that it used OEM GM parts which are available anywhere.

I'm not knowledgeable on the higher end EFI setups, but if your not needing all the features of high hp support, boost, knock, and nitrous, timing control, etc., is it worth the extra cost? I don't have the knowledge on the topic to say yay or nay.
 
Ned Kelly said:
What about the AFI and go with a stand alone 4l80e controller? I think Car Craft did a side by side review of several controllers not long ago and most did very well.

EDIT: Found it.
Car Craft March 2012
http://www.carcraft.com/techarticles/ccrp_1203_transmission_controllers_tested/viewall.html

I too just want a plug and play system, for a near stock BBC (RV cam and headers - that's it- but with a TH400 not 4l80e) and think the AFI should work well. I like the fact that it used OEM GM parts which are available anywhere.

I'm not knowledgeable on the higher end EFI setups, but if your not needing all the features of high hp support, boost, knock, and nitrous, timing control, etc., is it worth the extra cost? I don't have the knowledge on the topic to say yay or nay.
Click to expand...
at this point either way i go is going to be a stand alone.

the 4L80e option isnt critical right away. it was going to be a later project, i just wanted the option to have it controlled same way.
i really dont have a real "need" to justify a more expensive setup, as my rig is currently just a standard Gm crate 350. it just seems the self learning/updating setups would run better over more diverse conditions without requiring a retune to the tbi chip.

but that may not even be an issue, which is kinda why i was poking around for opinions.
 
Stomis said:
I don't understand why people over look the dominator system. Holley's system has the most features and uses. It also has the simplest tuning software. Its also the most bang for the buck. $1800 gets you 600hp of support, the most features, boost, knock, and nitrous, plus the timing control.
Click to expand...


It's also got a crapload of programmable logic that can be used for cool features you might want......

Like, say you want to monitor oil pressure and have a huge warning light and buzzer on the dash that activates when the pressure drops below 10psi? Dominator can do that.

Or maybe you want to run a 2-stage cooling fan option so that you only run a single fan unless coolant temps rise above 220*... then trigger the 2nd fan to come on. It can do that too.

Basically, you can use all of the available sensors (and even add your own) and build small "boolean logic" type programs to set thresholds for different events or combinations of events or values. It seems really powerful, and a great way to add cool functionality. :waytogo:


-G
 
So to play devils advocate, who here is running any of the systems, and what are their thoughts on them?

Self tuning sounds great, but does it actually work, and does it work right, or just make you think it works right?

On the systems you have to tune, is it any less complex than using/tuning a GM TBI setup that can already control the 4L80E?
 
Subscribed.

I am interested in a system for a Pro-Touring Nova 680HP w/ Occasional Nitrous use. No Smog, manual trans. Cuurently have a 1000CFM Double Pumper from the Carb Shop
 
I have the EZ-EFI on my 461 mildly modified BBC in the Maiden....programmer Set up is as easy as plugging it in, entering engine size, idle rpm, rev limit, calibrating the TPS...the programmer tells you simply to open the throttle to WOT and hold it there for a couple seconds, then let it go back to idle. Then OK'ing the base tune or you can enter your own parameters for idle mixture, mid range, and WOT....I had to richen up my idle....otherwise it would surge and stall....that is easy to do, and I am by no means a computer wiz....If I can do it anyone can!
I absolutely love the performance, No hesitation, No misfire, just flat out hauls ass.
If you have an I phone, this is way easier to navigate than those are!
 
Since the subject is going here. What's the fuel pressure required to run the fast TBI? I'm about to get a new tank with a TBI sender. And need to know if I get this set up in the future, would a stock TBI pump support this setup or would I have to switch out pump/tank to pre TBI?
 
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