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Question about going with electronic fuel injection

smokinjoe

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viper982

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Weren't most of the initial issues w/ the fuel command center and not the EFI unit itself?



I read about the check valve issue on the Cmd. ctr. which I want to say I've read FI is fixing now w/ a depression at the valve or something. And I've read the opinions that it could become fuel starved while in some of those precarious positions you guys place yourself off-roading :p but aren't both of those on the Cmd. ctr. v. the TB?



I'm was trying to add up all my milk money for the street 400 but want to make sure it's what I want, $700 is a lot of money in my hot rod budget and especially when there's two mouths to feed between the Stang and the EB.



What others problems have you heard of?


My main concern is being left stranded somewhere I guess it's just mainly due to relying on electronics designed by someone that isn't an auto manufacturer that has tons of r&d into their parts even though there systems can fail as well. At least with a carbureted engine I can always get myself out of a sticky situation. I am probably just over thinking it. You definitely can't beat having fuel injection for the price!
 

ren71

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My main concern is being left stranded somewhere I guess it's just mainly due to relying on electronics designed by someone that isn't an auto manufacturer that has tons of r&d into their parts even though there systems can fail as well. At least with a carbureted engine I can always get myself out of a sticky situation. I am probably just over thinking it. You definitely can't beat having fuel injection for the price!

I hear ya, but you can always carry a carb to swap out if the efi acts up, not an option on my ford efi swap unfortunately. And you'd have to decrease the fuel pressure somehow also.
 

reynard101

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You ain't kidding :eek:

Thanks for the info. Reynard! One last question, you wired the pump in via relay from a 12V ign source I assume, yes?

BTW, I would've been totatlly bass-ackwards on the filter return/feed fittings :-[ I'm glad you posted that ;)

Using the power feed from the FiTech system. It runs only for a few seconds before firing. And then runs constantly while running.
 

smokinjoe

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Using the power feed from the FiTech system. It runs only for a few seconds before firing. And then runs constantly while running.

Oh wow, cool. This system keeps getting more and more attractive. So that's the third wire I assume of the 3, power, ground and power feed.

Anyhoo, thanks for all your tips and engineering Reynard. I took the plunge today and ordered the Walbro 392 pump and Wix 33737 filter/regulator. Got em' off Flea Bay, $32.50 for the Wix filter and $87.50 for the pump w/ mounting kit.

Next purchase is the big one :eek:

Oh, the Fleabay ad had an application specific chart deal for the Vette filter in case you ever need it, 1999-2004 models.
 

ricky

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this is a clean setup..i'm assuming the aftermarket tank that Reynard is using,is not a efi tank? if not..where exactly is the pickup located?

can a stock single tank be setup the same way,using the stock pickup location? or maybe welding in fittings? or is the stock design really no way to have a "sump" to allow fuel to not be pulled away from the pickup? again,nice setup,really like the filter/reg design!
 

smokinjoe

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Aeromotive pre-filter.


So I received my GSL392 pump today & the seller included a part # for a off the shelf pre-filter, coincidently also off a Vette like the filter/regulator, although off an earlier Vette, 82-84 to be exact.

If using a 3/8" supply then use this filter: Wix 33482 or Napa 3482 http://www.fleetfilter.com/filter/33482.html

I have different part #'s if you want to use a 1/4" supply line.

The pre-filter 1/4" supply line is Napa 3310 ( I only pulled it for the Napa as I figure most people will run a 3/8" supply.)


Should be a cheap sub $10 pre-filter option.
 
Last edited:

work765

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work765

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Have the 600 HP unit on my 408W. So far so good. Had it off-road and it worked well. Not many miles on it right now. I think it's still learning. One issue I had was it died after cruising at steady throttle, then braking to turn, died mid-turn. It fires up very quickly.

The fuel command center was not available (sold out, long lead time). I went with a Walbro pump and the Corvette Fuel filter/regulator that has a return from the filter.




Is your bronco up and running? Is the corvette filter/regulator working?
 

DirtDonk

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My main concern is being left stranded somewhere I guess it's just mainly due to relying on electronics designed by someone that isn't an auto manufacturer that has tons of r&d into their parts even though there systems can fail as well...

Even though they're doing their own thing, the additional tuning we end up doing to our factory systems to make them run well in our own non-stock applications is kind of what they do at their end and give us what we need, as do most of the other companies I would say.
And the sensors and injectors and much of that stuff is factory level product anyway. Like GM sensors and such.
Can't say you're wrong in not comparing them to a large factory that does literally spend billions on development. But these guys are R&D'ing better for our type of use I would think.
That's just my sales pep talk though. But the stuff does seem to be working out pretty well. I think many (most?) of the issues people were having that didn't involve the Command Center revolved around the same problem that all the other EFI kits have had. And that's the relatively unsophisticated (to put it politely) state of the chassis wiring that exists on many EB's.
Lots of EFI installs are going in with original crappy wiring and very few grounds to bond the whole system together. With the sensors attached to the TB unit, a well grounded engine and chassis and body are kind of critical things to update. Even to the point of adding a ground jumper wire between the throttle body itself and the rest of the system.
I think that came up a few times.

this is a clean setup..i'm assuming the aftermarket tank that Reynard is using,is not a efi tank? if not..where exactly is the pickup located?

can a stock single tank be setup the same way,using the stock pickup location? or maybe welding in fittings? or is the stock design really no way to have a "sump" to allow fuel to not be pulled away from the pickup? again,nice setup,really like the filter/reg design!

Pretty sure he's just using a standard NWMP/Sunset Fab tank there. Non-EFI type.
External pump just connects with good hose and tight clamps, but that side of things is still just sucking and all the internal stuff can handle that. Some tanks are better baffled than others, but as long as there's a reliable supply of fuel covering the pickup tube, you can use just about any tank you want I would think.

Is your bronco up and running? Is the corvette filter/regulator working?

I would have to say yes. See the last pages here: http://classicbroncos.com/forums/showthread.php?t=237999

I'm sure the others will chime in to correct anything I misspoke about, but I just re-read the thread and wanted to add some comments.

Paul
 

work765

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Messages
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Paul,
Do you personally think the corvette filter/regulator is the ideal way to go if running an inline pump? I'm horrible at installing/fixing stuff; so im looking for a safe and effective way to run the fuel. i bought 25 feel of hose, so it doesn't matter at this point which way i go.


also, i was planning on buying this pump: https://www.summitracing.com/parts/aei-11540/overview/
and I bought this line: http://www.ebay.com/itm/NEW-USA-Gat...Injection-Hose-GreenShield-Line-/121186173327

but now im stumped as to the fittings I need.

I think i need different fittings than the standard fitech inline pump install because im using 3/8..

Thanks Paul. I just got home today and fitech is here!. so now its go time, to get all the parts together and try for the install this weekend.
 

DirtDonk

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Good luck this weekend!

Sorry I'm no expert on the filter arrangement. But his seems to be running well and I can't see why it wouldn't.
I personally don't mind running a return line the entire way down a vehicle's length, so simply using the fitting from the FiTech throttle body and running back is what I'll likely end up doing when I set one up eventually.
But filters with return ports have been plumbing lifesavers for 50 years now, so no reason to think it can't be here.

Looks like good hose and a pump you're intending. Don't think using 3/8" is going to be a problem though? Are the fittings A/N type? If so, plenty of them with the same AN end to fit 5/16 or 3/8 and still screw on to the same fitting.
Sorry I'm not more familiar with the unit yet. Not having installed one at this point, I don't have that intimate feel for it.

You might call in and talk to Justin at WH as he's using one on his '72. Still using the same plumbing he had with the Edelbrock and then the MSD units, so seems pretty straightforward.

How's your wiring?;D

Paul
My '65 Chevy Corvair turbo has one in fact. Being a mechanical puller pump though, the filter is still right up at the engine. This is fairly important in a hot-running carbureted vehicle though, while not so much on a fuel-injected one I wouldn't think.
 
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