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Hey all I am considering going with holley's 2di kit on my EB. I have dual tanks and I am wondering if I need their dual tank kit or not. Any help is appreciated.
EB Pro-jection
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DO NOT RUN THE PRO-JECTION!!! The ford SEFI is an easier swap, more reliable, cheaper, and runs much better. Many people have pulled the Pro-Jection off and put on the factory EFI parts, no one has ever pulled the factory parts off for pro-jection. I even know a couple of people who have pulled the pro jection to swap back to a carbouerator,as it was found to be a better running, more reliable setup in the rocks...
I agree. I've never run the Holly setup..because I've seen to many people with to many problems. The Howell is more expensive but the reports are good.
However, the Ford SEFI converison is really the way to go. Granted it's not a 'Bolt On' but you can get all the parts from the same car at almost any wrecking yard pretty cheap. It might seem a little overwhelming at first but you won't regret it.
However, the Ford SEFI converison is really the way to go. Granted it's not a 'Bolt On' but you can get all the parts from the same car at almost any wrecking yard pretty cheap. It might seem a little overwhelming at first but you won't regret it.
Stay away from the Pro(blem)- jection! I bought a kit years ago and ended up taking it off for a carb. Now I run a 351w w/ chevy TBI set up and it is great. My bud runs a 90 CHP 5.0 with stock efi and it also runs good. What eveer you do stay with a factory EFI set up weather it is ford or chevy.
I second that! The only way I could get my pro-jection to work was to stick it back into the box it came in and bolt on a Q-jet! I'm swapping in a 351W and I'm going with the Howell system. BTW talk to the guys at Howell about sourcing some of the parts yourself and you can save a ton of money, they're pretty decent guys. I got my ecu and throttle body from a wrecking yard all I need from them is the prom (they custom burn it for your engine specs) and the wiring harness. I can use the pumps from my pro-jection unit (it was good for something after all!) and pick up the rest of the necessary sensors at just about any dealer or auto parts store. Hope that helps you some.rokcrln said:
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O.K
The Projection sure gets a lot of grief from you folks.
To answer your question: no you don't need to buy the dual tank installation kit for your EB. The only drawback to the single tank configuration is that your fuel return flows only to your main tank. This means when you run out of gas you can switch to auxilary but this tank empties extremely fast so you have to convert back to the main to finish the gas originally in your auxilary tank. This is by no means an elegant system but it works just fine if you wanna be cheap. Just mount the fuel pump on the main gas line going to your projection unit.
Secondly, yes the the factory EFI is a nice conversion and certainly the most reliable for EB's but this is in part due to the fact that you don't really have to know what you are doing to get it to work right. It is already tuned and set up for your engine. The projection system will run great but only if you fully understand the system. This is by no means a plug and play installation.
You are better off with a projection if you want to better troubleshoot your fuel system if problems do arrise. In terms of performance...well you gotta find out for yourself. Go for it. Live a little and learn a lot. I'm happy I did on my 72' EB!
The Projection sure gets a lot of grief from you folks.
To answer your question: no you don't need to buy the dual tank installation kit for your EB. The only drawback to the single tank configuration is that your fuel return flows only to your main tank. This means when you run out of gas you can switch to auxilary but this tank empties extremely fast so you have to convert back to the main to finish the gas originally in your auxilary tank. This is by no means an elegant system but it works just fine if you wanna be cheap. Just mount the fuel pump on the main gas line going to your projection unit.
Secondly, yes the the factory EFI is a nice conversion and certainly the most reliable for EB's but this is in part due to the fact that you don't really have to know what you are doing to get it to work right. It is already tuned and set up for your engine. The projection system will run great but only if you fully understand the system. This is by no means a plug and play installation.
You are better off with a projection if you want to better troubleshoot your fuel system if problems do arrise. In terms of performance...well you gotta find out for yourself. Go for it. Live a little and learn a lot. I'm happy I did on my 72' EB!
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161 Posts
Because it is more trouble than factory EFI, with no reallakotastoy said:
advantage over factory EFI!
I don't know how the Projection could be that much easier to trouble shoot than Ford EFI... a cheapo code scanner, fuel pressure tester, a couple of relays, and a spare TFI and you are set for most trailside problems. The whole point of EFI is so you don't have to screw with it! If I wanted to fiddle around to make the motor run right I'd save money and run a Holley carb. Factory EFI simply works right off the bat, no messing around. The big advantage with the factory EFI is there is ALOT of performance support for it so if you do want to upgrade there's plenty of stuff out there to do it with.
I'm sorry but , my Pro-Jection sysyem gave me nothing but grief I later found out that it wasn't recommended for anything but a totally stock motor it won't tolerate even the mildest cams, was hard to start when warm, it would flood, can you imagine trying to start it in gear while balanced in some crazy off camber position and have to have it floored just so it'll start, the ecu was real sensitive to voltage changes too, it'd die when ever I'd run my winch. And believe me it was installed and adjusted exactly per instructions (I'm real anal in that respect) all in all it was about a $1100 mistake ( the system, dual tank kit, fuel line etc...) Spend a little more money and go with factory EFI or one of the GM (gulp!) based systems, you'll be much happier! One positive thing about it though, it got great gas mileage on the highway, once you got it started.lakotastoy said:
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Mild cams, winches, voltage changes, flooding, etc????? I have no issues here nor does my brother who did the exact same conversion on his Bronco. Now the tuning procedure Holley provides in the manual is a load of crap I will admit. The key here is to tune the system appropriate to your application. As long as you installed the system CORRECTLY and UNDERSTAND how the system works then you really shouldn't have any issues. The projection was created for a wide range of applications and Hlley is not able give you an exact layout for tuning your individual application. They just get you in the general ballpark. The rest is up to you. I guess I'm gonna favor the projection over the stock EFI until I have a problem. Man it is so much cleaner under the hood too. Sorry ya'll have had so many issues. Anyone gonna be down at the Chili Challenge in New Mexico. If so let me know and I'll demo a properly working projection for you.
I second for the Pro-jection once you have it tuned it works, but it does take some time. Also the dirctions are crap for the install and the tunning. Now that I have it tunned it's great, but I do carry a spare fuel pump. Just so you know it does have a limp home mode and once an Oxygen sensor is installed only 2 knobs need to be adjusted. Just my 2 cents.
Well, you guys must have been lucky then! Everybody I knew, or met, that had Pro-Jection was less than satisfied with the performance of the system. Believe me I'm a very competant mechanic and had spent alot of time tuning and adjusting it but, it never ran the way I thought it should. Let me ask you something, when your motor's warm will it start right up without touching the gas pedal? Mine wouldn't. I'd have to give it just the slightest tap and that would send it into a high idle for several seconds. Totally unaceptable when you're in a situation where you got to start it in gear! And if it didn't start right away it'd flood. I made several calls to Holley's tech dept. and they were no help at all. Oh, yeah according to them there was no "limp home" program in the ecu (I carried a carb. and tubing to bypass the pumps with me at all times and I left the stock fuel pump bolted onto the motor) Anybody interested in buying what's left of my system PM me, I'll let it go for cheap!
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O.K. I have had an issue with starting the engine when warm. Seems like it floods very easily. This is not a big issue for my panssy driving style though. If it doesn't start right up which it usaully does 90% of the time then I give it two pumps like a carb and it starts right up. Haven't figured that one out yet but hope to solve the problem soon. I'm not saying the projection is the "perfect fuel system solution" but I do believe it to be reliable and consistent. It provides the performance I am looking for and it is not too expensive in comparison to some other aftermarket solutions. The projection out performs my old carb any day of the week in all driving situations.
Also I believe it neccesary to include the fact that I am running the newer 2DI projection. The earlier analog model was troublesome from what I hear. Don't wanna cause confusion here.
Some of these gripes I've heard could be about obsolette technology.
Good luck to you all. The quest for your perfect vehicle is never complete but lots of fun regardless of the headaches!
Also I believe it neccesary to include the fact that I am running the newer 2DI projection. The earlier analog model was troublesome from what I hear. Don't wanna cause confusion here.
Some of these gripes I've heard could be about obsolette technology.
Good luck to you all. The quest for your perfect vehicle is never complete but lots of fun regardless of the headaches!
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3,379 Posts
have to say, my painless wiring harness has been more trouble than the projection. My 75' 302 is running a mild cam, and headers, with zero problems. You just have to UNDERSTAND the system to tune it, and it is nothing like a stock EFI. It is more like a carb with higher precision, and high angle ability. I would never use the ford EFI, simply because it is not an attractive setup, in my opinion, and it has alot more that can go wrong with it. the projection is super simple, and is very tunable if you understand the system.
Oh, and I saw a few of even the old analog systems out at the chili, and they worked flawlessly. But they are not for the basic bolt on back yard mech.
Oh, and I saw a few of even the old analog systems out at the chili, and they worked flawlessly. But they are not for the basic bolt on back yard mech.
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3,379 Posts
thus you could not get it to work, so I ask you, why does it work so well for others, and not you! You must have gotten a bad unit right!!! Tuning the system, is alot more complicated than the directions lead it to be, and you will not get it tuned just by reading the direction.
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Hey, I understood it completely. I did a Vulcan mind meld with it and understood that it is a piece of junk and you're better off with a Carter. If you want something reliable, use GM throttle body injection system. BTW, what do you know about Broncos anyway, Oatmeal? Ever since you bought that Toyota, you forgot how to work on your Bronco. It's been parked now for how many years? It's become your stepchild. Need to get off your a$$ and fix it so that I have room to work on my trucks in your driveway.
Peace!
Peace!
Okay, so what's so special about the way you tune your's. I've done it all; I tuned it the way Holley recommends, crap. Called Holley's tech guys,I think I knew more about it than they did (no help at all). I tuned it with a vacuum guage and tach, ran pertty decent, but, not good enough for me (my main gripe was the warm starting performance as mentioned earlier). I even used an air/fuel ratio meter. Don't get me wrong it made more power, was smoother and got better mileage than my carb but the warm starting performance was maddening! I even got so irritated with it that I had it "professionally" tuned, it ran better when I did it! You know, if my truck had an auto trans I'd have kept it. I wouldn't have to worry about restarting if/when you stall when crawling nasty terrain, like with a manual trans. BTW you should take a poll to see who is happy with thier Pro- Jection, I'm willing to bet you'd find more people with stories like mine. Maybe your performance expectations are just lower than mine.Puffdragon said:
Friggin clown!:flipoff2:CloudWatcher said:Hey, I understood it completely. I did a Vulcan mind meld with it and understood that it is a piece of junk and you're better off with a Carter. If you want something reliable, use GM throttle body injection system. BTW, what do you know about Broncos anyway, Oatmeal? Ever since you bought that Toyota, you forgot how to work on your Bronco. It's been parked now for how many years? It's become your stepchild. Need to get off your a$$ and fix it so that I have room to work on my trucks in your driveway.
Peace!
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