LS with Fast Ez-efi?

[69sixpackbee]

I have, er, HAD one on my 402. I was never that impressed with the overall characterstics of this system. I have been down the EFI road in the past and always gravitate back to the E'brock 1904 carb and the HEI. It always runs best with that setup. I've been there and done that. To all of you who love them I give you a thumbs up. It IS a nice product,,....but it is not for me. Some things are better left untouched. The Gen IV engines are just not efficient enough for this setup..IMHO

Next time (and the last time to boot) will be an LS6 transplant.
Gonna run what is supposed to be injected.

At least my carb wont fill the engine with gas when the pintles stick open and wont leave me stranded when the ECU takes a s**t!

Bud

[85burb]

Originally Posted by 69 1/2 Six Pack Bee

I have, er, HAD one on my 402. I was never that impressed with the overall characterstics of this system. I have been down the EFI road in the past and always gravitate back to the E'brock 1904 carb and the HEI. It always runs best with that setup. I've been there and done that. To all of you who love them I give you a thumbs up. It IS a nice product,,....but it is not for me. Some things are better left untouched. The Gen IV engines are just not efficient enough for this setup..IMHO

Next time (and the last time to boot) will be an LS6 transplant.
Gonna run what is supposed to be injected.

At least my carb wont fill the engine with gas when the pintles stick open and wont leave me stranded when the ECU takes a s**t!

Bud

The ecu may not but the modual in the hei sure will leave you stranded prob more the my ecu. People dont tell us to carry spare ecu like they do with the moduals in hei. If my injector does fail and leak it wont leak as much as a gasket on a carb. Only has the fuel in my two tiny rails to leak.

[69sixpackbee]

Originally Posted by 85burb

The ecu may not but the modual in the hei sure will leave you stranded prob more the my ecu. People dont tell us to carry spare ecu like they do with the moduals in hei. If my injector does fail and leak it wont leak as much as a gasket on a carb. Only has the fuel in my two tiny rails to leak.

I carry spares and I have yet had one fail.

[85burb]

Originally Posted by 69 1/2 Six Pack Bee

I carry spares and I have yet had one fail.

I have had a few fail. Never on my burb but wifes 68 had one and her dads nova had a few fail. Good thing for spares. No worries about that now. No dizzy...

[DirtyLarry]

Man, I don’t know. It looks great and the install is very clean but I am having a hard time wrapping my head around the idea of tossing a carburetor on a modern port injected engine then later adding a fancy aftermarket TBI unit. For the money of the MSD ignition to fire the coils then the aftermarket TBI kit, a person could have ran the stock LS port injected intake, purchased a harness ($500) and had the stock LS type ECM tuned ($200-$300) and been a lot of money ahead plus got a much better performing and reliable running engine in the end. There is no comparison between TBI and MPI or stock GM fuel system vs. aftermarket when it comes to durability and dependability. I must be crazy or something. It looks way cool though.

[69sixpackbee]

I'm with ya, Larry! I guess the reason the F.I. folks want to chit-can the components and bolt on a carbie is because we know something they don't, eh? When it comes down to it simplicity will usually win over complexity. EFI "looks" cool on these old mills but with the last 3 iterations I have had the carb STILL runs the best. Less junk, less wires, less hoses and less headaches!
For a vehicle I rarely use it always ends up being the "Guinea Pig" for new stuff to try but nothing stays very long. Just fun to try. In the end I will probably go the ENTIRE LS6 route if I am going to do it again. I will be $$ ahead in the long run. Somehow, sitting for hours on end with a laptop hooked up to the ECU has really lost it's appeal. The "self tuning" systems that are being touted as such are really falling short of their intended purpose. What works good for some really suck for the others. I am one of those "others" All things work as expected in a "perfect world"
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[Super73]

Laptop tuning is not hard at all once you understand it. For instance, a few weeks ago I tuned a 02 6 speed Camaro with 42lb injectors, big cam and bolt ons in less than 3 hours. At the same time we tuned his buddies C5 vette with similar mods but an automatic. Most the time was eaten up driving around from here to there dataloging and making some minor adjustments. Both cars ran stellar after that, all with out getting dirty and in 3 hours

Anyone that really dials in a carb spends at least 2 hours swapping parts and playing with the thing, but getting dirty

Carbs have there place, and so does EFI. Heck, my little 347ci motor ran incredably well with a 243/250 @ .050 cam, single plain with a dominator throttle body. A computer will never get it perfect because it lacks feel. Just because a wideband says it's perfect doesn't mean it is.

[85burb]

I fully understand that factory gm would have been the best fuel mpgs. I have done countless hours of resurch on the hole subject. For the factory style ls1 maniflod and all the crap to go with it was 1100-1200 bucks. That is severl hundred less then what i spent. I did not want a truck manifold they are way too bulkey for what i wanted. I just would never be happy with the LS1 style maniflod and would have gone out later and got a aftermarket intake and those are over a grand most of the time. I did not want to buy a tuning program or pay for a tune and dyno run everytime i change something like heads or cam. And on the self learning on this system it is amazing how well it is doing. Only dove it 6 days and it is neer seamless. I understand efi more then carbs due to my schooling and age. I am not saying everyone has to like efi or carbs. This is what i wanted to buy and it makes me happy. One day i will have a 2wd chevy truck and put a factory efi swap in it. This will not always be my dd. It will always be a massive toy. I am sure i could have spent more money on a better carb and tuneing and got better mpg but i do not have the skills for that. This i like a carb that i can tell it what to do and it does it. It was not desined to make mpgs go up as much as the drivability and tons less time tuning. It will increase my milage cause the carb i had was no ware neer right. I got it to where i could drive it ok. I have this conversation in every thread i have ever started from the time i was thinking about a LQ4 and i understand that lots of people will never get why i did not just use the factory efi but that is fine.

[Clyde65]

As long as your happy with it 85burb, then I like it.

with these swaps, pleasing our selves is what matters, right? hell I could have done the LQ4/9, and all that but didnt cuz I wanted MPG and drive ability, not HP, most folks tell me I should have "bla,bla" but IDK I like what I have and it pleases me, period!

[69sixpackbee]

Mileage with the Q'jet= 10MPG
mileage with the EZ-EFI=10MPG
Cold starting wit the carb=Very good
Cold starting with the EZ-EFI=for s**t
Low end throttle response with the carb=pretty damn good
Low end throttle response with the EZ-EFI=somewhat better
Padding the throttle to move with a big load from a stop with the carb=don't have to
Padding the throttle to move with a big load from a stop with the EZ-EFI=if I dont it will die...every time.

'nuff said



Gotta love the hype in the magazine writeups.

If you like it and it works good for you that is all that really matters

[85burb]

Originally Posted by 69 1/2 Six Pack Bee

Mileage with the Q'jet= 10MPG
mileage with the EZ-EFI=10MPG
Cold starting wit the carb=Very good
Cold starting with the EZ-EFI=for s**t
Low end throttle response with the carb=pretty damn good
Low end throttle response with the EZ-EFI=somewhat better
Padding the throttle to move with a big load from a stop with the carb=don't have to
Padding the throttle to move with a big load from a stop with the EZ-EFI=if I dont it will die...every time.

'nuff said



Gotta love the hype in the magazine writeups.

If you like it and it works good for you that is all that really matters

What kit did you have? How long did you have it on befor you took it off? Mine has never givin me a cold start problem at all. I get in turn key to run and let the injectors do there prime shot and pump do a prime which take all of about 3 seconds to compleat. Then bump key and it comes to life. Goes to 1000 rpm then in few seconds goes to 700 with no problem. Even the very first time i ever started it with efi it started perfict. The coldes it has ever ben is 50 degrees or so. The mag write up said exactly what has happend with my kit. Said it gives better driveability, easyer tuneability, even added fuel milage in some cases. Mine acctually gained many hp over the carb i had. It is not intended to increas milage but it often does due to the efi keeping it at a constant a/f ratio. If your carb is tuned perfictly befor you swap to this efi you may not notice any change other then when you want to change a/f ratios. I am very happy with it and would buy a seconed one if i ever buy anything that has a carb on it.

[Super73]

So what did the EZ-EFI run you? I have been thinking about doing something like that on my 67 Lincoln Continental convertible.

[85burb]

Originally Posted by Super73

So what did the EZ-EFI run you? I have been thinking about doing something like that on my 67 Lincoln Continental convertible.

I got mine threw summit but they price matched atlanticspeeds price so just under 1900 shipped. Top of the line kit to me. Have not seen any others but the quality of this one to me is amazing. Uses very nice connectors water tight ecm, and connectors.

[69sixpackbee]

Well,
I had the entire master kit. It was on for about 6 months or so and I logged about 600 miles...plenty of time that it should have needed to "tune in". The install was a breeze as stated. Straight forward and simple. Since I tuned my 402 with an Innovate LC1 WBO2 before I pretty well knew the AFR targets my mill liked. I put those into the handheld of the FAST and it was pretty much the same. I was hoping to get better A/F control but that was just not the case. i am using an MSD 6 for the trigger and an adjustable timing control to boot. My engine is a stock mill with 9:1 CR and headers. Grunt cam (XE250H) and a 4-speed manual. This engine likes to run rich..period. AFR targets are 12.8 idle, 13.9 mid and 12.8 WOT. Wont run worth a **** on anything else. I tried close to stoich and all it would do is misfire, pop and sputter like a mofo so that is NOT what my engine wanted.
Maybe if it was atop a more efficient mill I would be happier but it is what it is. I haul around a big ass Lance camper on it and I can tell you this. I pass alot of newer trucks on hils and when I jump on the onramps most people think they are going around me...they get surprized when I hit the top of the ramp at speed! Gets them looking
It does run good...but not as "forgiving" as a carb. No way, no how.

I love FI on all my other vehicles (except the Bee..three Holleys...) because they are meant to have it and run flawlessly with it. I am just saying that the add on "tune it by itself" systems leave alot to be desired..IMHO

"If it works good then don't f**k with it"..I am still trying to get that concept through my noggin. )

[85burb]

Originally Posted by 69 1/2 Six Pack Bee

"If it works good then don't f**k with it"..I am still trying to get that concept through my noggin. )

That right there is something i need to work on. I cant leave anything alone. Does not matter what i drive. All i can think about is making it faster. Seems like you had it set up right. Not sure how long it takes to know how to do everything right would hope it would be lots less then 600 miles. My targets are 13.9 idle 14 cruise 12.9 wot. I am pretty sure it likes those numbers so i will leave it alone and see what happens.

[mbgmike]

Just for info we sell them and the edelbrock version too. We don't have to price match anyone. We sell them for less than Jeg's, Summit everyday as true with most parts. We are $1579.00 FST30226-KIT everyday price. Same day shipping to. Right now we are putting the Edelbock EFI on a small block 68 Vette.

[Fabian]

I have installed on both of my engine the FAST system and I love it ...

here it is on my LS2



here on my 383

[Fabian]

[85burb]

Originally Posted by mbgmike

Just for info we sell them and the edelbrock version too. We don't have to price match anyone. We sell them for less than Jeg's, Summit everyday as true with most parts. We are $1579.00 FST30226-KIT everyday price. Same day shipping to. Right now we are putting the Edelbock EFI on a small block 68 Vette.

You sell the FAST EZ EFI master kit for 1579???????? Dang it!

[85burb]

Originally Posted by Fabian

That looks great!

[jwalk]

85burb that's sweet! Glad to see you have yours up and running! I'm still planning to run this setup.
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[85burb]

Originally Posted by jwalk

85burb that's sweet! Glad to see you have yours up and running! I'm still planning to run this setup.
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Thought we lost you there for a min. I could not be happier. Still learning but deff milage inprovement so far. Atleast one more day to the tank. This last tank i drove all over town sat looking for exhaust shop and friday therw wendsday then friday, and 2 days this week befor i only got like 6 trips to work. This tank full will tell me for sure. Hoping for 9-10 trips to work. That is what the wore out ole sbc got befor i did swap.

[85burb]

Sorry it has been so long for a update. I got 12 trips to work for a total of 270 miles and used 18.8 gallons of gas. That is about 14.5 mpg. All the milage is from mapquest. My odomiter is way off. Any ways it is running better then ever and has far exceded my expectations of mpgs. The wideband o2 sensor gauge is pretty solid now. Only moves when i move the throttle. Would deff do it again.