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

Did some checking on wiring. A Walbro pump that will put out 340 lph @ 70 psi will need about 17 amps. Wire length should be no more than 15 feet. Used a marine wiring chart, figured they were more stringent. Recommended gauge would be 10. That would support 1000 HP.

Would like to know more about how fuel pressure is regulated and specs on electronics for fuel pump.

 

If the chart recommens 10ga I'd go at least 8ga and solder as many of the terminals and connections as possible. A smear of dielectric grease wherever there are crimp terminals/connections that are removable will save you headaches later on as well. Be sure to use a fuse for that long run right at the battery to keep things safe, maybe start with a 20amp fuse and keep a 25 and/or 30 amp fuse in the glove box until you get things proven out. A spare relay in the glovebox is cheap insurance as well. I've read some stories of chineesium relays rated for 25 amps melting out at around 15, one article recommended the Bosch 30 amp units as safe and cost effective.

That fuel line failure would add a lot of "pucker factor" to a drive. I can only imagine the possible liability, I hope they get that resolved as i'd like to see these guys succeed. I was hoping they would offer to send you a new fuel line kit and I see they did, good for them and you! I'm actually going to get to SEMA this year, I hope to chat with these guys if they aren't too busy.

 

PRI? SEMA just ended a week ago o No:

 

:Brow:

 

Hmm, now that you mention it :shock:

http://www.tflcar.com/2015/11/toyota-mirai-goes-back-future-sema-video/






Now I feel dirty

 

Yep, brain cramp.. meant to type PRI.

 

Got the replacement unit with new hose yesterday. FI tech responded quickly with a replacement. The new hose is clearly stamped "Russell" on the exterior. Here is another pic of the old hose. They had to send me an entire new unit because the hose was disintegrating and I found pieces in the throttle body when I drained it. I will be moving my filter to directly before the TB even though the instructions show to install mid line....

I won't have time to install the new one for a few weekends with all the thanksgiving family coming into town....unless I can sneak away for a few hours.

Testing the mfg issue/vulcanization problem theory.........The hose piece on the left is a piece I cut off from a different section of the line and soaked in gas overnight. I then took out and cut open to inspect. No sign of deterioration. The piece on the right is what happened when I soaked the piece that came from the area near where the line blew.....completely started disintegrating. Interesting the pieces of line can react so differently with only a small length separating the 2 samples.





Again....I can't stress enough....if you received one of these units and your fuel line is not stamped "Russell", and it looks like this with this with the cloth wrap exterior.....DON'T use it. Buy something else or contact the company for new line.

 

Why not install two filters, that's what I did on my EFI install -- one right before the pump @ the tank ( obviously your pump is much closer to engine ) so I'd say one right at the tank and then one in the engine compartment before the TB. Double the filtration! I really didn't want any junk being sucked into my pump, nor did I want to take the chance something slipped by the 1st filter and then into the TB somehow. I think the one at the pump if IIRC correctly filtered down to 30microns and the one at the TB is 10microns. Just a thought...

 

That's the standard recommendations.

On my cars I use a simple carburetor filter between the low pressure pump and the surge tank then a standard GM MPFI fuel filter (late 90's Astro Van) filter after the high pressure pump. I am not sure what the micron filtration levels are between the two filters, but figured if its good enough for OE's trying to get 100,000 miles out of an engine (~12,000 mile change intervals), its good enough for me.

 

Good idea.

 

I've been on and off the Holley site for 2 weeks now. Look what just magically appeared.... https://www.holley.com/products/fue...sniper_efi/sniper_4bbl_tbi_kits/parts/550-511

Wonder how much they were influenced by the success and price point of the Fi Tech unit

 

in a way that's good maybe all these systems will come down some. as in the 2k units. I hope fi tech had patents and sues holley though.

I wonder with either system if I can load the software on a tablet and tune it like e street. I know you can plug in a laptop into fi tech. so im sure I could emulate it on android.

 

received my kit about a week ago and it did include the Russel hose, the throttle body and the fuel command center are built with excellent quality I was very impressed with the fuel command center when you hold this piece in your hand and look at it, by today's standards I was really impressed with the quality .
I seen jegs is also selling the fitech also as pace. I will post some pics soon I have the fuel center installed but it is tacking me a bit longer to complete cause I am really trying to make it look like it was built with it from the factory.

 

WOW!!! You're not only nekkid you're an hightechhillbilly! LOL

Would be cool if someone sold a self tuning EFI brain that would control TBI so the old TBI can be adapted to other cars very inexpensively or upgraded to a brain that doesn't need a chip burned for it!!! Or be able to upgrade an old TBI engine to actually make some power!!!



Derek

 

Holley is asking a lot to make a pre order with so little information. Of course my main problem is that Holley unit looks like a toad.

From what I can see the screen looks nicer than Fitech's but my piggybank still says Fitech on it's side. Unless someone here starts showing major problems with the Fitech I am going to see how good it works with blow through this spring.

 

Each year the efi systems get better and lower cost.. I sold all my efi stuff and will buy another setup in a few years.

 

From the Holley screen's I saw on various cars during Drag Week, Holley makes a very nice dash screen/controller for their ECU's. I was genuinely impressed with it.


Competition is usually a good thing.

 

It sounds silly but Holleys touch screen and the various standalone ecu controlled gauges they offer are a big draw for me to their product. It allows me to simplify my interior, eliminate wires and reduce the load on my fuse block. I can cater them to whatever situation I encounter and don't need to carry around a laptop.

It all comes down to what you want to get out of your Efi setup. Are you looking for maximum performance, the best bang for the buck or something to install and forget about. There are companies that make a product for each type of customer

 

Wonder where the new Holley unit is/will be assembled? Their Terminator units are assembled in the US which is partly responsible for the price premium. I suspect the FiTech unit is assembled overseas.

 

like tbi chevy? you could run a megasquirt on it but its not a simple tune process like these are but you could make changes without burning chips and its cheap. moneywise these two setups are the best bang for the buck though.