What's new
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

Goodbye TBI--Hello FAST

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...
You can still do all that with the old 7747 in the chip.

My AFR goes to 12.5 to when I hit the throttle past 60% and enter PE (Power Enrichment. There are also Hi Way mode settings built in but turned off do to emissions. Problems with tuning a GM ECM this way is the catalytic converter does not like it and gets to hot... but mine fell off. When I enabled Hi Way mode I gained 15% MPG...
 
Mastiff,

The FAST EZ efi does not control your timing. Fuel only. I was assuming you are putting this on your 83 K-5? So if you converted it to TBI, you'll have to go back to the distributor you had before you converted, when you had the carb setup.
 
Wyomingboy said:
Mastiff,

The FAST EZ efi does not control your timing. Fuel only. I was assuming you are putting this on your 83 K-5? So if you converted it to TBI, you'll have to go back to the distributor you had before you converted, when you had the carb setup.
Click to expand...
Gee that sounds like a step backwards...:doah:

All that aside I would really like to see and hear how this thing runs and what kind of power and MPG you get when it's done. You can always add an excellent ignition system to the fuel only system, why? I don't know when a stock GM system already does all this? But there is a greater learning curve to burning chips than answering a few questions on one of those hand held things...
 
I've been reading more on the dynamicEFI page. Looks like it might be a good way to go. You'll still need to do some tuning, but at least the ECM code has been updated and everything can be logged and modified using a modern computer without ripping the ECM out from under the dash every time (mine is permanently mounted where the center console used to be :rolleyes:). It just flashes the memory using a computer. And I expect BobR will help you get things going within reason. I E-mailed him to find out how much hand holding is included with a purchase.
 
Dynamic EFI is excellent and RBob is great support! But it does way more than you need! Documentation is great and there is a long thread on it at TGO.
 
eagle mark said:
Dynamic EFI is excellent and RBob is great support! But it does way more than you need! Documentation is great and there is a long thread on it at TGO.
Click to expand...

If there was something that did just what I need, I'd go with that, but I haven't found it. They only want $400 or so for their system, and I'd spend most of that just getting to the point where I could burn chips without my old laptop. Having someone to help me is worth a lot too.
 
Oh, I thought you were already burning chips?

$400. :eek1: Don't need a new laptop just any old one that runs and I think all equiptment can be had for $150.

I have a laptop running windows 98 that I lend out that does fine with WinALDL and has all requirments to run TunerPro but I don't want to take up space on theb old small hard drive and use my new one for that.
 
eagle mark said:
Oh, I thought you were already burning chips?

$400. :eek1: Don't need a new laptop just any old one that runs and I think all equiptment can be had for $150.

I have a laptop running windows 98 that I lend out that does fine with WinALDL and has all requirments to run TunerPro but I don't want to take up space on theb old small hard drive and use my new one for that.
Click to expand...

You misunderstand. I can burn chips, which involves blowing the dust off a 15 year old laptop and praying it all still runs. I find it a complete pain in the butt. Like you, I run TunerPro on my new machine so I need to find a way to get the bins from the new to the old laptop. Since I try this maybe once every 6 months I have to relearn the process all over every time.

I could buy stuff from Moates to get up and running on a non-ancient laptop, but that would cost $$, at least last I checked. Chip burners are very expensive. If I went with EBL it would all just work with my new laptop and the pain could be over. :rolleyes:
 
OK so you have a new laptop! Buy an AutoProm for like $350. and now you can emulate (tune chip while driving and record data wheile driving and include WideBand date through AutoProm into data while driving) when done save file and burn one chip and put it in. Now you are left with everything needed to do your next car.

Dynamic EFI is great, but it's only for one car. And it is so much more than anyone needs for anything close to a stock engine.
 
eagle mark said:
OK so you have a new laptop! Buy an AutoProm for like $350. and now you can emulate (tune chip while driving and record data wheile driving and include WideBand date through AutoProm into data while driving) when done save file and burn one chip and put it in. Now you are left with everything needed to do your next car.

Dynamic EFI is great, but it's only for one car. And it is so much more than anyone needs for anything close to a stock engine.
Click to expand...

Actually, I already have a Moates Ostrich, which lets me change the bin on the fly. I still need my old laptop to see winALDL though. In the end the ostrich comes off though, then I need to flash a chip and all that nonsense.
 
I'm still trying to sell the idea that newer TBI PCM is the best option. I agree, changing the pins on the ECM connectors is a chore.:frown1:

With the Ostrich and the newer TBI PCM combined together, the capabilities are on PAR with the Dynamic EFI system, for less money.

I think an accurate comparison between the older TBI ECM and newer TBI PCM is like a work horse vs. mule. The newer TBI PCM is capable of more, and much faster than a mule.

dave w
 
dave w said:
I'm still trying to sell the idea that newer TBI PCM is the best option. I agree, changing the pins on the ECM connectors is a chore.:frown1:

With the Ostrich and the newer TBI PCM combined together, the capabilities are on PAR with the Dynamic EFI system, for less money.

I think an accurate comparison between the older TBI ECM and newer TBI PCM is like a work horse vs. mule. The newer TBI PCM is capable of more, and much faster than a mule.

dave w
Click to expand...

Wouldn't I need a new harness for the new PCM? Even if the sensors are all the same, I assume the connectors at the ECM are different. Right?
 
Mastiff said:
Wouldn't I need a new harness for the new PCM? Even if the sensors are all the same, I assume the connectors at the ECM are different. Right?
Click to expand...

Same harness. The newer TBI PCM uses Red / Blue Connectors. The older TBI ECM uses two back connectors. I pull the pins out of the black connectors, and then put the pins into the Red / Blue Connectors. That's it!:D

dave w

DSCN3106.JPG

DSCN3123.JPG
 
dave w said:
I'm still trying to sell the idea that newer TBI PCM is the best option. I agree, changing the pins on the ECM connectors is a chore.:frown1:

With the Ostrich and the newer TBI PCM combined together, the capabilities are on PAR with the Dynamic EFI system, for less money.

I think an accurate comparison between the older TBI ECM and newer TBI PCM is like a work horse vs. mule. The newer TBI PCM is capable of more, and much faster than a mule.

dave w
Click to expand...
Your absolutely right! :D

But I'm not sure I would change out a good running rig just because of a little tuning?

Doubt I will start from scratch with any conversions other than the newer PCM.
 
You must log in or register to reply here.

Latest Posts

Top Bottom