what makes the TWEECER so much cheaper?

With the tweecer you will only be limited by the stock Ford tune. This means that almost any setting/adjustment that Ford made, you will be able to modify.
By using an editor other than the tweecer software (TunerPro, PCMX, etc.) you will have access to more settings, and you will have more flexibility with what adjustments you can make. Most of these other editors can be downloaded for free, but PCMX is $150 (for this price it includes some pretty nice functionality, but is far beyond the needs of the average tuner).

As far as the tweecer learning curve...
The hard part of tuning with the tweecer is learning how Ford tuned your ecu originally.
Due to the complexity of the Ford tune, this can be a little time consuming.
For some the time needed to get familiar with the tweecer is a negative. For me, it meant I was learning more detailed information on how the ecu worked.

When you get your tweecer (if you decide to go that route), the first tune changes you make will reflect the hardware changes you have made to the car.
Injector Size
MAF meter Size
TB airflow
Turn off emissions devices that have been removed.

After these tune adjustments, you will most likely see a difference in how the car drives/idles.

You will also want to set the fuel pressure back to stock (38-41psi), and set the dist base timing to 10*.
You return fuel and timing to factory base levels, because with the tweecer ALL timing and fuel adjustments can and should be made with the ecu. This will also make it easier to read the timing tables, as they assume 10* at the dist.


Hope that answers some of your questions, let me know if you have others,
jason

so i cant go in and change the fuel and spark tables with the tweecer????


and i can run the dizzy at 10degress base advance and tinker with the comuter and have it do all the advancing for me?? so advancing base timing by loosening the dizzy would be useless to do then right??

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Exactly. There are many ways to alter your timing through the Tweecer, the easiest way is using the "spark advance at WOT" setting, which is set at 0 in the PCM. The Tweecer allows you to add degrees of advance there, so your timing will ONLY advance at WOT. For instance, I have the same base tune in all my Tweecer settings (1, 2, 3, 4). But I changed the spark advance in those so I can change my timing at the track with a flick of a switch. One setting I have at 13* total advance, one at 15*, one at 17*, and one at stock 10* for when I am spraying.

There are other ways to alter your timing as well, but as mentioned above you really need to understand how the stock PCM works. There are many things that can make the PCM alter your timing, and you can use those parameters to change spark under different conditions.

can i also add more fuel to the mix but changing the pulse width of the injectors? ( which goes along with the spark and fuel table question)

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Yes, there are different ways to alter your fuel tables. The first thing you want to do, if you have larger than stock 19lb injectors is to load that info into the Tweecer. You can load injector slopes and MAF info into the Tweecer. You can also adjust many other settings that will effect the A/F ratio.

and i can have different tunes saved for me. like an economy/ DD tune and then switch to a race tune or for n2o or boost? would have to have a laptop out to do this or is there a way to have a simple switch or something change the settings whenever i feel like it?

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Yes, the Tweecer comes with a switch that allows you to load in 4 different calibrations....and a fifth setting for bypassing the Tweecer and running off the stock PCM. The really cool feature is that you can change on the fly. Like I said, I have the same basic tune in all my settings, but I have a different timing setting in each one. This way I start off at 15* advance on my first run at the track, and if I hear detonation, I can just flick the switch and back down to 13*. If the car feels fine and I am not having any issues, I can bump it up to 17*. Then when I want to start spraying, I switch it back to 10*. I always bring my laptop with me to datalog my runs, that way I can see if I am running lean, rich, and generally go back over my run and see what I did.

If you decide to go with a Tweecer, make sure to get the RT version, that is the one you can datalog with. Also invest in a wide band o2, there are a few ways to can hook one up to your Tweecer so you can datalog and read your AF ratio while tuning.

The bottom line is that the learning curve is pretty steep, and you should really read up and understand how the stock PCM works. But even before you start getting into some detailed tuning, the Tweecer allows you to input basic things that makes your car much more driveable...especially with things like larger injectors and a cam.

Oh, one thing I would suggest. Start reading up on it as much as you can...

http://www.freewebs.com/vristang/
http://eectuning.org/forums/
http://www.fordfuelinjection.com/
http://webpages.charter.net/chrisstephens/Main Frame.html

Before I bought my Tweecer, I actually downloaded the program and played with it on my PC. It made all the reading easier being able to actually see how the program works.

Well done Fett

Foxfan88 said:

and what do you mean by software exactly. like can you run a more in depth and complex program using the tweecer connector dealy?

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When you download 'Tweecer' to your computer, you are downloading 2 software programs, and a bunch of supporting files.
The Programs are CalEdit and CalCon.
CalEdit is used to make changes to the tune. If you want to change the size of the injector, you will make that change in CalEdit.
There are better programs available though. CalEdit has some errors, and is a little limited on what parameters can be changed.
I mentioned the other Editors above.

CalCon is the software used to datalog. There is only one alternative program available to CalCon. BinEditor is the only datalogging software alternative to CalCon.

Foxfan88 said:

and i can have different tunes saved for me. like an economy/ DD tune and then switch to a race tune or for n2o or boost? would have to have a laptop out to do this or is there a way to have a simple switch or something change the settings whenever i feel like it?

Click to expand...

The multiple tune option can save some time during the tuning process as well. I was able to load several alternative programs (all with different settings) and try them all while cruising down the road.
You don't need a laptop to change from one preset tune to another.... Once the tunes are loaded to the tweecer module, all you have to do is turn the knob.


jason

The tweecer manual has been revised in the last couple of months, and is actually useful now. It is a good starting point, in addition to the links Fett provided above.
Also, look into the Probst book for 88-93 vehicles. After a few months of tuning, the material in this book will seem pretty basic. But it will answer a lot of the questions you have, and some of the ones you don't even know to ask...
It can be found at Amazon.com

The MAF meter...
Once you download the tweecer software, it will make more sense.
For now...
Every MAF meter has an output scale that is different from other meters. When you change the sample tube on your C&L meter, the voltage output of the meter changes.
The setting 'MAF Transfer' allows you to tell the computer exactly what MAF is on the car. You have no need for calibrated MAF meters. When you change the injector size, you won't need to change the MAF meter; you will only make a couple of changes for the injector size.
Since you have a ProM meter, I would plan on switching to that. I tried using a C&L, but was never able to get consistent results from it. Many others have reported the same experience.

Closed Loop (using the O2's) allows you to take advantage of the Adaptive Strategy for improved fuel economy at light loads.
Open loop (ignoring the O2's) does not allow the use of adaptive.
Some folks suggest using OL all the time, but *in my opinion* that is a HACK way of tuning. A short cut for guys who don't want to learn how to tune the adaptive.
Most often this is done to get around a part throttle drivability issue, which *seemingly* can't be fixed....

How much power you gain, will vary. There really isn't any way for us to answer that.
It will depend on how far off your current tune is...

jason

Hello from the 94-95 World

I lurk over here from time to time to see what you Fox boys are up to

I've played around with the Tweecer for a while now

I can bottom line it kinda like this ...........

The Tweecer is just an interface giving you access to the pcm
sooooo
The Tweecer software can be learned in an hour or two

Its learning about the basic operation of the PCM
That is gonna be where you'll spend your time :Word:
You need to know ... W H Y ... you'd want to make a change

Another way to look at this would be .......

How could one be effective with a tool to make the pcm more suitable
due to the addition of all their hot rod parts

if

They don't understand how it works in the first place

Good Luck with your Self Tuning plans

Grady

final5-0 said:

Hello from the 94-95 World

I lurk over here from time to time to see what you Fox boys are up to

I've played around with the Tweecer for a while now
Grady

Click to expand...

Well look who stayed over to the wrong side of the tracks...
Don't let the other sn95'ers catch you slumming it over here




Good to hear from ya' Grady
jason

I just might have to spend a bit more time over here

A close friend has a Notch and he asked for help with the tune

I told him to move to a 94-95

I really don't wanna learn another PCM

Grady

Yea, it is amazing how different the 94-95 5.0 PCM is from the Fox PCM. Most of the Tweecer info I found on the net is geared more for the EEC-V 5.0. So I am now reading up on how the stock PCM works.