FI Tech "Go EFI 4" Self Tuning Throttle Body Injection Install Thread

The install looks great, very clean and well thought out. Can't wait to hear results of the road test. How loud is the the fuel sump under the hood. Is it overpowering at idle? I ordered mine a few days ago, I hope it will also help with the raw fuel smell in the garage.

Keep us posted and thank you for sharing and documenting your experience.

Kevin

 

What! You couldn't get the install done in 4 hours? :laugh: Real life is more like an episode of Road Kill. They never get anything done on time.

 

I do not understand all this concern about fuel pump noise. Those people need new mufflers.

On a serious note, does all of the fuel come in above the butterflies? Or is there a port below the butterflies for idle. Would love for Fitech to publish a few technical papers on how the system works.

 

I do believe it is all above the butterflies. They have a video of the bores while running on a full dyno pull

 

I saw the same thing. If that is the case then you can understand about adjusting the butterflies for idle.

Also wonder what that tube is in one of the bores. My guess is that it is some kind of sensor.

 

What do the instructions say about a fuel vent back to the tank? My 65 doesn't have a vent so would that be a required change or does the system just vent to the reservoir?

 

If you are using the fuel command system you would have to build a vent line to he gas tank.

If you are using your own electric fuel pump you will need a return fuel line to the gas tank. The one thing I am confused about is do you need a pressure regulator with this type of system? FiTech's directions just show line in and line out with no regulator. Would have a talk with them about this when ordering.

 

Regulator is supposed to be built into the throttle body. No need for an additional one.

 

Eric,

That's a cool setup and definitely less expensive than a lot of the other options out there. I'll be curious to see how it does on the road and if you see any increase in mileage. Thanks for posting!

 

I ran the car through a warm up cycle tonight. I can't even hear the fuel pump after start up.........

Edit.......after the test drive today, I will say you can faintly hear the pump......but it is not bad at all. I have heard many pumps, including the stock one on my Chevy truck, that I would consider louder than this one.

 

I will start with the good. Took my first test drive today with the unit installed and was extremely impressed. Idle was smooth, acceleration was crisp, and the unit seen perform great from the very beginning. As the unit continued to learn it drove even better! Very smooth acceleration. I also noticed that my switch pitch in low stall behaved much better. The car no longer seemed like it wanted to die in low stall at a stop when idling in gear. I was extremely happy until I got home and tried to move the car into the garage.

When I did and backed the car up I noticed fluid pouring out from underneath the car! I shut the car off and opened the hood to find gasoline everywhere! And I mean everywhere. There had to be a gallon of gas in the engine compartment.

The high pressure side line after the fuel filter but before the throttle body had burst and was squirting a half inch stream of fuel onto my engine and all over my engine compartment. I can't stress how lucky I am the car did not catch on fire. I think the only thing that saved me was the fact it had cooled down since the test drive earlier in the day.

....DO NOT USE their supplied fuel line if it is not Russell branded line. I am lucky my car is not a pile of ashes right now. I believe I received an older unit with their previous suppliers fuel line (based on a conversation with them last week). I had called them asking to see if I could get some more of the same type of fuel line that I had received my kit. They indicated the fuel line I had was probably the old-style and all their new kits were shipped with Russell branded fuel line with the larger weave on the outside of the fuel line. I think I understand why they changed suppliers now! That stuff dissolved and blew a hole within 10 miles of me driving the car! I am extremely lucky my car did not catch on fire. The bad news is that most of my freshly refinished engine compartment now gets to be re-done! The paint is spotted and damaged from all the gasoline! I am pissed off.....but also thankful the fire department was not involved. Here is a picture of a portion of the fuel line they supplied with the area that burst towards the bottom of the photo. The rest was an area I cut to inspect more of the line.



Even worse, once I looked at the line I found it it was actually disintegrating! It was very gummy and falling apart! After only a few minutes of use!!!! absolutely unacceptable. I will be calling them on Monday to see what they say. Stay tuned.

 

Holy crap! I've had great luck with Gates EFI hose I get by the foot from NAPA. Seems to be resistant to all of today's gasoline's ills. I've got Russel brand braided line on the car now, to make sure I didn't have any tech inspection issues at Drag Week. Bought some cheap stuff that was rated for the pressure, etc and after about four years it started to weep through the braiding, and same thing it was gummy and disintegrating.

In a little over six years of being EFI I've only had two instances where the pressure line came loose (fittings on the pumps I use) and both times fuel pressure drop was enough to shut the engine down and the ECU turned the fuel pump off. Certainly glad it wasn't worse for you, and does beg the question, does the TBI control the fuel pump relay?

 

All of my fuel line are now Teflon. Now really happy I did it that way. Thinking when I move to the fuel injection I will take all lines to the shop and have them pressure tested.

Sure glad that you did not catch on fire. Scary deal no matter what.

 

The TBI unit does control the fuel pump on the fuel command center.....but it didn't shut off. Must have still been getting enough fuel to run at idle and I guess there is not some type of low pressure shut off in the unit/software.

 

Eric, what is the length and gauge of the orange fuel pump wire. It looks a little light and would not run to the back of the car.

When I inquired about my fuel system's compatibility with the FiTech TBI they said I would have to use a relay (already set up that way) BUT, Fitech schematics claim no relay is required. It may have something to do with my pump. Will have to run that down.

Hoping that Fitech will get their tech page set up soon.

 

It appears to be 16 gauge wire.

 

That seems way too small to run an electric pump at the back of the car. May be why they told me to run a relay. Guess I will have to really look at power requirements and do the math.

 

If you end up buying new line out of pocket save yourself a few pennies and buy Parker Pushlok from your local hydraulic hose shop, its NHRA legal and will cost WAYYYY less than buying from Summit, etc... and they'll just re-box/re-label the parker stuff anyways. IIRC Fragola is the name they sell it under. Im pretty sure the Earl's stuff is Parker too -- hell wouldn't be surprised if most of the domestic pushlok type hoses are re-branded Parker hoses.

 

Good info there. Thanks for sharing.

 

Thanks for the Parker hose info.

I contacted the company today. I talked to Ken (Owner?). He was understandably concerned and said the reason they had switched to Russell hoses was due to previous issues. They had an issue with some hose while testing but the hose mfg assured them it was because they were unlucky and got some from the very end of a run that was not vulcanized correctly. He said I was the first to contact him with this type of problem.

He said he would send a new unit with Russell hose today. Even offered to expedite it if I wanted him to (which I declined because I won't be able to get back to the car until this weekend anyway).

I suggested, twice, that they contact anyone who may have received kits with this hose in it. Very high risk of a major problem, including injury or death.