Actually, you are correct about the differences. The main thing is that it pulls out timing to limit torque during shifts, mainly to keep us from breaking so many T-5's.

Also, the 94 and 95 EEC are different, 95 is the most aggressive timing and fuel curves. Also, my EEC on my 95 was fine with supercharger, heads, 65 mm TB, etc. - cams are the problem.

Your best bet is to find a Pro-M 93 EEC with performance harness and then you can mod away. That is what I have in my 95 now and it has been wonderful, because it has the most aggressive timing and fuel curves and will accept any cam.

Hope this helps.

 

Just get the EEC Tuner or TwEECer and tune it yourself. Or, get a custom chip burnt, if you don't feel like learning how to program the EEC.

 

Is the TwEECer really that good? I'm curious because I have seen a lot about it, but don't know anyone with one. What is the general concensus?

 

The TwEECer R/T is the best tuning software you can buy. The real time data logging is the best available.

 

I had to use a PRO-M improvement harness with a A9L computer and I am also using the EEC-Tuner. without it, it was hard making the car idle with the cam.

 

The TwEECer R/T is the best tuning software you can buy. The real time data logging is the best available.

That is a bold statement. Im sure many would disagree.

 

They really aren't all that bad.... they are a bit more of a pain in the a$$ to get right with a cam and heavy mods but careful tuning and the right selection of parts, it will work fine. The EEC in the 94-95's are actually better because they have the ability to control things that the older EEC's couldn't. I have had the Pro M A9L conversion and switched back to the stock EEC with the eec tuner and the car is fine with a fully built DSS 306, big cam, blower, heads, intake, etc... and it idles and drives perfect. But it was a B*** to get right. The eec in the 94-95's are definitly not as forgiving but they do work great.

 

The EEC Tuner & TwEECer are good DIY tuning products, pretty consistent and reliable. Only problems are 1. you need to understand everything about the EECIV (94/5's are all load based calculations, even under WOT, infinite adjustments). 2. The field of tuners out there if you need assistance i.e. dyno analysis, secrets/tricks, etc... are *very* limited, most tuners are geared towards A9L or OBDII cpu's. I've always see a tuner cringe (knowing I have a 95 cpu) when I bring in my car for dyno time. 3. If you want the best tuning, you'll need to spend more $$ on support equipment (WBO2's, logger, EGT, etc...)

BTW, the TwEEcer R/T is nice as it's got data logging, which can be very helpful, but I'm not sure if it's available for our EECIV's models.

If you want a simple, yet effective setup with our cpu's using these tools, you'll end up "undoing" the 94/5 EECIV to "dumb it down" to A9L (i.e. WOT tables), which I recommend swapping to a A9L. Otherwise, if you solve the above 3 issues, you can take advantge of the newer programming our cpu's offer for a very powerful setup (smooth, optimum power that is...). IMO, our cpu's offer the possiblity of a better, more flexible powerband if tuned correctly for the street. As for the track, the A9L maybe easier to program. Without a tuning device, usually cams or big buck items will cause our cpu's to act poorly. Otherwise, our cpus will adjust to the 90% of the bolt-ons out there.

(eec tuner user since 1999 )

 

Some great advice here. The myth that the 94/95 EEC is "worse" than the A9L is only surpassed by the myth that self-tuners are a nightmare.

In my opinion, self-tuners are great. If you have time to learn, why not get to learn your car, save a ton of money, and leave yourself a REALM of room to grow? It all makes sense to me as one of the most rewarding mods you can make; not only in terms of performance gain but in knowledge of the car and how it operates. Surely something that will always be desireable as you own the car.

 

lets say one thing about a custom chip if it is not done with adyno run then it is just guess work. even after entering mass air funtions from a calibration sheet it still takes a few runs of datalogging to adjust for lean or rich conditions at various rpms. not to mention injector timing for larger cams . the tweecer rt or eec tuner is the only real way to tweek your car without living at the dyno. and multi reburns.

 

I wish I had the money to spend on tuning software, but I don't. I chose to just build around it, the old fashoined way. Stock computer, see sig for mods. Car runs good, I might be leaving 15 horse on the table but that doesn't bother me.

 

BenW-Kinda hard to argue with 15-20hp from the factory, all computer, isn't it? Of course the 94-95 EEC's aren't as aggressive as the A9L's, and if you're into tuners/tweakers and you've seen the binaries, you can't argue that.

Original poster: I did the Pro-M PIH kit (with A9L) and was glad with it at the moment. Had I known the Probst manual existed, I would have went that route and bought a BAP and fan controller elsewhere. Live and learn...

I plan on tweecing the car now as well, getting into all that. I guess in the long run I spent more then just going either way, but I got a good tune quick, and now the ability to learn at my own pace.

 

BTW, the TwEEcer R/T is nice as it's got data logging, which can be very helpful, but I'm not sure if it's available for our EECIV's models.

It is available for SN95 EECs. I had it running on mine when had my TwEECer. I'm running an EEC Tuner now (long story) and datalogging (not real time) is possible with our processors and the EEC Tuner (V5.2 and up) with a copy of Paul Booth's EEC Editor.

 

I run the EEC-Tuner with the GUIEEC software. I love it. You need a laptop. There is a very good support group (forum) for the product. You can read, search the forum, and ask questions to get all the information you need to know. I have been running it for about 6 years. Never had one problem. My car was down, without an engine and battery for about a year, and when everything went back together, the computer still had the program I had loaded.

You have to invest to understand it. There are alot of tables and data, and you will only change a few, but, everything in the computer is accessable.

 

TweecerRT

The EEC Tuner & TwEECer are good DIY tuning products, pretty consistent and reliable. Only problems are 1. you need to understand everything about the EECIV (94/5's are all load based calculations, even under WOT, infinite adjustments). 2. The field of tuners out there if you need assistance i.e. dyno analysis, secrets/tricks, etc... are *very* limited, most tuners are geared towards A9L or OBDII cpu's. I've always see a tuner cringe (knowing I have a 95 cpu) when I bring in my car for dyno time. 3. If you want the best tuning, you'll need to spend more $$ on support equipment (WBO2's, logger, EGT, etc...)

BTW, the TwEEcer R/T is nice as it's got data logging, which can be very helpful, but I'm not sure if it's available for our EECIV's models.

If you want a simple, yet effective setup with our cpu's using these tools, you'll end up "undoing" the 94/5 EECIV to "dumb it down" to A9L (i.e. WOT tables), which I recommend swapping to a A9L. Otherwise, if you solve the above 3 issues, you can take advantge of the newer programming our cpu's offer for a very powerful setup (smooth, optimum power that is...). IMO, our cpu's offer the possiblity of a better, more flexible powerband if tuned correctly for the street. As for the track, the A9L maybe easier to program. Without a tuning device, usually cams or big buck items will cause our cpu's to act poorly. Otherwise, our cpus will adjust to the 90% of the bolt-ons out there.

(eec tuner user since 1999 )

Yes they are available and do work w/94 EEC IVs! I had a JMS chip. Also have 4R70W that I was told only fordchip or a Baumann standalone could make the converter lock correctly. Well w/the Tweecer RT I fixed it myself. See this thread:
http://www.corral.net/forums/showthread.php?s=&threadid=353803&highlight=converter
Mike Glover and STKR, LLC are great and have a great product. I wished I had started out there first.
Wayne

 

Guys, where do you buy the TwEECer? Who sells them? Do you need a laptop to run it? I'm interested in finding out more about it. Any web sites I can go to?

 

TweecerRT

Guys, where do you buy the TwEECer? Who sells them? Do you need a laptop to run it? I'm interested in finding out more about it. Any web sites I can go to?

www.tweecer.com, you can buy direct from them or on their site they have links to several shops that sell them too.
If you want to leave it permanently installed on your EEC, you'll need a laptop. It can also be used on a desktop, then installed in car.
Wayne