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Goodbye TBI--Hello FAST

Thats the third person between here and 67-72chevytrucks.com to get one of these units in about a month! They seem like the ****!
 
Goodbye TBI Hello FAST--Part 2-running now

Finally got my 6 month project running. Notice I didn't say finished. As there are some details to get done still.

But here are some key learnings:

I was able to cut off all un-wanted TBI sensor wires. Left the computer in place and my speedo still works, gauges work, cruise is working somewhat, I have to find out why it won't hold very well.
I still have to hook up a manual Torque Converter lockup switch as that computer function does not work anymore.
I mounted my new fuel pressure regulator on the firewall near where the old fuel pump relay was. I tried to use the old relay, but couldn't get it running right. But the FAST fuel pump relay was easy to install and works well.

I put in a MSD (ready to run) distributor with aggessive advance parameters.

So far the FAST System is still learning, but I can tell it is getting better.
I don't know how long it takes.
My motor is running better than before. Prior, my old motor with the 206-211 .521 cam would only run 4000 rpm in 3rd gear @104 mph. My new 211-211 .541cam(David Vizard spec) will now pull to 4700 rpm in 3rd and was pulling hard (when I realized how fast I was going) and shut it down.

It's really cool to be able to see my instant AFR's and be able to set them to whatever I want. Plus many other parameters.

So I guess the big news is there are alternatives to TBI besides carb's.

DSCN1541 (580x435).jpg
 
Part 2-real time monitoring

Forgot to attach this photo of 1 screen of 4 available for live data readout on the FAST unit.
This screen shows the rpm, O2 sensor, the real AF and the target AF, and indicators such as errors, learning enabled, and O2 sensor enabled.

IMG00001-20110616-0821(1).jpg
 
Well, thats pretty much a 100% success rate with FAST from what i have read so far. Everyone seems to really like that setup!
 
Wyomingboy, could you update on this for me? Maybe I missed something, but in your other post you seemed happy with the results after C.P.E. tuned on it for you. Did you want to find more power or did you change some engine parts? I know that curiosity killed the cat and empties my wallet! Thanks for letting us know.
 
6872xtc,

I was happy with CPE for the most part. I developed a problem with air leaks and that kind of negated much of my performance gains with the tuning. As air leaks on the manifold gaskets, tell the computer you are running lean, and give it more gas causing it to actually run rich.

And then I wanted to go to phase "2" on the tuning(more power) and no one could tell me how much I could get with any particular system, also I wanted a system that could grow with my needs( or wants for more power), so I finally decided the FAST was the most adaptable for me and didn't need an out of state tuner every time I wanted to make a change! That's probably the biggest single reason I went to FAST.

I am going to build a mild Vortec 383 for towing and keep the stock MPFI system on my 96 truck, and I will probably take it to CPE to have it tuned.


But to obtain tunability on my own(present day technology), without having to learn to burn chips(80's technology). And make changes, for different situations, those are the main reasons I went to FAST.
 
6872xtc,

I didn't really answer all your question I noticed after I posted.

On my engine I wanted to go with a "single patern" cam. Most all David Vizard cams are that way. Well most "injection" people tell you single pattern cams kill vacuum, and they don't recommend them.
So the FAST system will work down to 8" of vacuum.

So I ended up with a 211/211 single pattern Lunatti cam (they grind Vizard spec cams) with .541 total lift with 1.6 rockers. I pulled my motor cause it's hard working over the rad bracket with 3" lift anyway. Pulled my heads and took them to the machine shop to get the guides cut down for the larger lift.
SHOCKER here !! My new GMMP heads with 20,000 miles and 1 year had 15 of the 16 guides wore out. The Machinist said it was probably the poor quality coming out of all the factory shops now !! He sees it all the time. Also the heads were not flat & had to be machined. So milled them .010 and changed out all the guides and had new seals installed, new BeeHive springs. Used a .020 head gasket for a total squish of @ .040-.045". CR figures out to 10:1.
Installed the cam & found out my GM timing set was " 6" degrees advanced !!! So I used a Cloyes adjustable with keyways. The next time I'll get the one that adjusts on the Cam gear, as it is much more time consuming to pull the crank gear off each time. So I degreed it in @ 2.5 degrees advanced.
Pulled off my High Volume GMMP oil pump I had and put on a STANDARD volume Melling pump.

Put it all back together with an Edelbrock vortec Performer RPM manifold and it idles with 15" of vacuum.
Total timing right now is 31 degrees but that may change. That was just the first estimate. No knocking or pinging, running @ 175 degrees water temp.

Stage 3 coming up will be a 406 or thereabouts???
 
Thank you for the detailed response!! That's exactly what I was wondering if you were playing with changing parts or??? But... this is were my curiosity costs me money! I wonder what it would do for my trucks...

Thanks again!
 
options

I thought i would stick this in here. I have not tried this supplier and it won't work for Wyomingboy now that he has moved on but I saw this link on another site and it was a good read. http://www.dynamicefi.com I don't know anything about the supplier but the info on the website was interesting. If a person was interested in spending the time to program their ecm it might be a good option.
 
No, dyno's in Wy are few & far between. I'm just happy with the way it pulls.
I'm still tuning it and only have 31 degrees of total timing in it right now. I work out of state and am gone a lot, so I haven't done the final tuning to it yet. Still need to hook up my torque converter lock up too.

I'm just glad that I can actually control the timing & AFR myself now and not wonder where it's at. Since the system has real time displays for AFR I'm confident I'll finish getting it lined out when I get home.

I just wanted to report that there are options to TBI besides carbs and they work well.
 
blazerdavid said:
I thought i would stick this in here. I have not tried this supplier and it won't work for Wyomingboy now that he has moved on but I saw this link on another site and it was a good read. http://www.dynamicefi.com I don't know anything about the supplier but the info on the website was interesting. If a person was interested in spending the time to program their ecm it might be a good option.
Click to expand...
Excellent product and tech support. Lots of them on TGO and RBob is the owner of product and moderator on TGO
 
A Walbro 255 liters per hour. Got it from the TBIchips e-bay store. It works very well. It will put out 60 psi with no return flow(i.e. engine turned off).
 
So what's the bottom line on the FAST? Is it working and was it pretty much plug and play? I've had it with my TBI conversion. It works, but has some bad quirks and I'm all alone trying to get it to work. I have all the stuff I need to do chips, and I have been, but I'm really just hacking at all these parameters, praying that I'll get lucky. Plus I'm holding on to this ancient laptop just for my chip burner - windows 98. :doah: One day it won't boot and I'll be done for.

Did you look into the TPI setups like the stuff Edelbrock makes? I wonder how that compares to FAST in terms of total value, ease of installation, etc.

I've been thinking about DynamicEFI for a long time. At this point I just want it to work, and they may be more geared toward people who want to putter around with their tunes all the time.
 
Hey Mastiff,

Since I am gone from home a lot, I still don't have my project completely tuned yet. But I think it will get there.
I'm with you, I didn't want to invest in a 25 year old technology either. Yes TBI can work well, for all you who have done so.
But since you had a carbed setup to begin with, first off you should stay carbed. You can get a wide band 02 sensor and really tune your carb.
There is no power advantage to EFI. It was mainly developed to control emissions, they do start better and run better during startup conditions and in cold weather.
I did look at some of the other EFI systems from Edelebrock and Howell and the TPI. But I wanted to use a cam with less vacuum capability than traditional efi systems and I wanted something that I could change engines with and still be able to run it. Like when I get my 400 sbc I can just bolt this system on it and it will run that too.
So it is pretty much plug and play, especially since you don't have an overdrive, or computer controlled ignition.
I had to put in an MSD and I am just about done with my overdrive lockup system.
The biggest thing is the FAST EZ efi, comes set quit rich, and I have had some trouble fouling my plugs, because I had the idle set too rich. But after a quick call to the speed shop that sold it to me I got that straightened up. Also you cannot have any air leaks in your exhaust. Which is also true with your TBI, but even more so with a wide band O2 sensor, since it commands the tuner to change your af ratios instantly.

So to answer your questions, yes it is plug & play. But you do have to answer the setup questions so it can calibrate itself. You'll have to put in a high pressure fuel pump. But you can use your stock distributor already.
PM me if you have any other questions.
Good Luck
 
Thanks. It sounds like you are saying the fast does not do timing, is that right? My GM TBI setup does that, not sure what it's worth.

Wyomingboy said:
Hey Mastiff,

Since I am gone from home a lot, I still don't have my project completely tuned yet. But I think it will get there.
I'm with you, I didn't want to invest in a 25 year old technology either. Yes TBI can work well, for all you who have done so.
But since you had a carbed setup to begin with, first off you should stay carbed. You can get a wide band 02 sensor and really tune your carb.
There is no power advantage to EFI. It was mainly developed to control emissions, they do start better and run better during startup conditions and in cold weather.
I did look at some of the other EFI systems from Edelebrock and Howell and the TPI. But I wanted to use a cam with less vacuum capability than traditional efi systems and I wanted something that I could change engines with and still be able to run it. Like when I get my 400 sbc I can just bolt this system on it and it will run that too.
So it is pretty much plug and play, especially since you don't have an overdrive, or computer controlled ignition.
I had to put in an MSD and I am just about done with my overdrive lockup system.
The biggest thing is the FAST EZ efi, comes set quit rich, and I have had some trouble fouling my plugs, because I had the idle set too rich. But after a quick call to the speed shop that sold it to me I got that straightened up. Also you cannot have any air leaks in your exhaust. Which is also true with your TBI, but even more so with a wide band O2 sensor, since it commands the tuner to change your af ratios instantly.

So to answer your questions, yes it is plug & play. But you do have to answer the setup questions so it can calibrate itself. You'll have to put in a high pressure fuel pump. But you can use your stock distributor already.
PM me if you have any other questions.
Good Luck
Click to expand...
 
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