FI tech (1 Viewer)

[blbuck12]

Looks like the new 2 barrell unit is up for sale on Jegs and Summit Racing. Summit just doesn't have the pictures yet. Looks like it handles up to 400hp.
FITech Fuel Injection 39001: Go EFI 400 HP 2-Barrel Throttle Body System | JEGS


Summit also has the master kit for Go Street 400hp + external fuel kit on sale for only $900 which is crazy tempting... Now I just need to sell a few parts to cover the cost.
FiTech Go Street EFI 400HP Self-Tuning Fuel Injection Systems 31003


What would be the benefit of having the 2 barrel over the 4? intake velocity? Maybe faster throttle response? Possibly no need to an adapter plate?

 

[gregnash]

Looks like the 2barrel has kept the 2 barrel intake mating spec, which I would hope means that it would not require an adapter and extra gaskets to work like the 4barrel version.

Here is the new 2 Barrel product page. Go EFI 2 Barrel 400HP – Classic Carburetor Gold – FiTech Fuel Injection

 

[chelo]

Interesting. Just got an email this morning from them stating that the 2 barrel would be ready near March.
The holley is also out.

 

[gregnash]

Weird thing is that the 2 Barrel is not any cheaper than the 4, so really the only benefit it would use that you would get is the ability to mate to your intake without an adapter. But from what I could tell there was no documentation on what the bolt pattern for the 2 barrel is? Are most 2 barrel configurations from the 80s the same?

 

[chelo]

Could be the holley 2300 which is the more common one used but shure would be nice to know.

 

[White Stripe]

So just saw this thread - I dropped a Fitech on my 2F rebuild for my FJ55 last fall. I was so fed up with screwing with the choke in the winter. This thing works like a charm. It took a couple weeks for it to tune to my engine...and ever since it has just gotten smoother and smoother.

Install was very easy. Mr. Gasket adapter ( a little grinding for clearance ), fuel pump from RobbMC, some nice fuel hose and the rest was plug and play.

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How did you wire up the FiTech timing control?

 

[gilamonster]

Maybe I missed somewhere, but does the FI tech version need a new distributor to control timing? I thought the AFI unit needed it.

 

[ryanwk628]

You can run them without timing control, just as a carb replacement and go with an HEI or Toyota coil and dizzy. If you wanted timing control you would probably need to find a GM 6cyl dizzy set up for that and swap on a Toyota gear.
https://www.youtube.com/watch?v=oBSiyeg4XCU


I asked fitech about the new set up:

Hello,

I have been considering your product for a while and saw you have a new 2 barrel system out on Jegs. It says this supports up to 400 HP with 2 injectors and I am wondering what are the pros and cons of this vs your 4 barrel 4 injector 400 HP unit? Does the 2bbl unit have bigger injectors? I have both a 2 barrel (stock) and 4 barrel intake (offenhauser dual plane) for my 3.9L inline 6 I am looking to convert to fuel injection​

The response was:

the main consideration would be how many CFM does your engine need. Too much CFM will affect the low-end drivability.


With your engine I would recommend a 2 barrel throttlebody. Unless you're planning on exceeding 400 hp.


Anything else let me know​

I can see why Holley has a reputation for better customer service. This would be a summer project for me but if anyone pulls the trigger please share!

 

[gregnash]

Glad that you are able to get a response from FiTech as I have not received anything (at least that I know of). Good to know that information. So looks like the 2bbl setup may be better suited for our applications than the 4bbl. Sucky part is that the throttle linkage is on the passenger side of their unit, not the drivers side like the 4bbl. Wonder why they changed it.

 

[ryanwk628]

Glad that you are able to get a response from FiTech as I have not received anything (at least that I know of). Good to know that information. So looks like the 2bbl setup may be better suited for our applications than the 4bbl. Sucky part is that the throttle linkage is on the passenger side of their unit, not the drivers side like the 4bbl. Wonder why they changed it.

The carbs these seem to be based on (Holleys) were used in Ford applications and the Ford inline 6s have the intake on the passenger side. The Holley literature is specifically marketing to Ford guys.

I imagine this would have to be adapted the same way Downey did the Holleys.

 

[gregnash]

Ah ok that makes more sense.. Most of the videos about the 2bbl that I found were guys talking about VW applications, so I figured it had something more to do with that. Since this becomes a drive by cable situation it should be easier to adapt than the linkage situation.

 

[KWalkerM]

For what its worth I am running an FI-Tech high flow fuel pump and it is infinitely quieter than both the Walbro and MSD pumps I have also run. This is on an LS swap 60 and an adjustable fuel pressure regulator inline of the pump. just my 2 cents

 

[blbuck12]

I take it that's the inline pump setup? and with the adjustable fuel pressure regulator you don't need a return line?

 

[KWalkerM]

I take it that's the inline pump setup? and with the adjustable fuel pressure regulator you don't need a return line?

I am running an adjustable pressure regulator with a return line on the frame rail. Heat kills pumps and a return line keeps the fuel moving and wont overheat and kill thr pump as quickly.

Nowhere to put an intank pump on the LRA long range tank

 

[74fj40]

Bump, I am installing the sniper 2 bbl on my 72 fj40 with an F155. Holley Sniper 2 barrel conversion

 

[ScottS]

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[Jacob Bridges]

This thread is short on first-hand experience so I'd like to add a little bit to this thread I read through before I bought the FI Tech. On my 74 FJ40 with F155 engine, I just installed their 2bbl kit, using their fuel command center 2, and Downey's EFI installation kit. I only have about 10 miles so far since the install but so far so good.

For the most part, the installation was pretty straightforward. The 2bbl uses the Holley 2300 bolt pattern, which Downey includes an adapter for in his kit. I had no problems mounting the unit so the throttle linkage was on the driver's side. Because I already had a Weber setup with a cable throttle linkage it was easy to hook up. I did swap out the cable I had installed for the one Downey provided because his seemed of higher quality. I intend to do a little write-up soon of my experience and settings. When I was considering the transition to EFI, the information available on mud was hard to find at best.

At the time I removed my Weber 38/38, my cruiser was running flawlessly, albeit perpetually rich. I went with EFI with hopes of more consistent AFRs, better mileage, and less need for tinkering. Time will tell...

Please PM with any specific questions and I'll be happy to answer as best as I can.

 

[lovetoski]

Hi Jacob,
Would be great to hear more as you accumulate miles. Pics are always good as well. Thankyou.

 

[overlandmachines]

I have the Fitech Go Steet 400 on my 76 fj40 2f engine. I used a 4 barrel dual plane Offenhauser intake. I have read that single plane tend to work better with efi but I don't know if it would matter. I have significantly more feel of the pants power and my engine runs really smooth up to 4,000 rpm where I stop pushing it.

It used to feel like my cruiser was going to explode (what I thought was drive train vibration is gone). It runs very well and I could not be happier with it. I have some stumble if I push the pedal quickly but no problems with normal driving only when seeing how it responds to being stomped on. I may be able to be solved with proper settings but could also be from having a big throttle body opening up on an engine that was not really designed to flow so much air. I am still trying to dial that problem in but I don't have much knowledge in that arena. Also could be a result of low compression maybe? I only have 80 lbs in my cylinders.

I had to replace my brake booster with a pancake style (from a 80 series if I remember right, rotated upside down with a spacer) because it was in the way.

SNG, really interested in your Offy/FiTech setup. DMd you! Thanks!

 

[Zjohnsonua]

Hi Jacob,
Would be great to hear more as you accumulate miles. Pics are always good as well. Thankyou.

x2. I'm planning some high altitude trips this spring and summer and am itching to pull the trigger on one of these Holley or FiTech systems to delete what will surely be days full of tuning, but 1st hand info has been sparse. Whatever info you can provide will be helpful, @Jacob Bridges.