Fiero 1227730 ECM conversion

[LostNotForgotton]

So I've gone through a couple fill-ups since doing this ECM swap and the results are in. I did not factor in the fill up after the autocross as that wouldn't be an accurate assessment. OK, I have a short commute to work every day and the driving style would be more towards city with a somewhat heavy foot on the gas so I could improve my mpg slightly if I wanted to but...it's a fun car to drive and I like to have a little fun. When the car had the 2.8 engine with 184,000 miles I was averaging about 16.5 mpg and never broke over 21 mpg highway...ever. When I dropped the 3.4 engine into the car last year my mpg actually went up to an average of about 17.5 mpg and over 22 mpg highway. Maybe the engine didn't have to work as hard to move the car along or maybe the tired ol' 2.8 with the high miles was just not as efficient as it could have been. Regardless I actually did get 1 whole mpg improvement with the bigger engine. Now after the 7730 swap I've been averaging 18.3 mpg. Almost 1 more mpg improvement in the exact same driving style and the exact same route I take every day. There is definitely a noticeable improvement in the cars efficiency. I haven't done any highway driving yet so I'm not going to state any numbers there. When I do, I will post them.
Just for kicks are a few pics of my autocross for anyone that can't watch the video

[Flyboy81]

Yeah, I have to say I like the 7730 swap over any other tuning for the standard Fiero ECU.  Great job on the ecu swap BTW and if you ever need any help with tuning or data logging, we have all that here as well.  We also use tunerpro RT.  Its a little quirky but it does work.  We also have a chip burner for any changes that may need to be made.  Anyway, congrats and AWESOME car. 

[Robs Fieros]

I called Rick again today about getting the cradle jack and still haven't heard anything yet. It's starting to sound just like yesterday.

[Fierofool]

Robbie, issues about your cradle jack should be posted in its own thread, please.  It's been 2 years or more you've been talking about Rick or Derek or Darrel won't return it.  If you know where it is, just drive up there and get it.  If they won't answer or return your calls, then just drive up to their home or business and ask them face to face.

[LostNotForgotton]

[LostNotForgotton]

[TopNotch]

Here's your youtube link. The problem is that you had "https" instead of "http".

[LostNotForgotton]

Good to know, THANKS! I'll remember that for the future

[GTRS Fiero]

For anyone considering this ECM install, you may be better served with a different ECU, depending on the engine.  Check with Ryan at Sinister Performance.

[f85gtron]

Different ecu's handle the calc and inputs a little different, along with different masks that command differing calc commands. For tbi (single injector) or batch fire injection, such as crank triggered dis (7x), the 7730 is superb. If you're looking at more resolution, such as 24x cam triggering for multi point sequential injection, other ecm choices might be better.
Any ecm will suffer from a poor tune. If the fueling is off, that puts more work on the ecm processor and the effect is lots of calculating and sluggish performance.

[Fierofool]

Hey, Ron.  I've been talking with a guy out in OK that's doing the 7730 and he told me you said you didn't use a knock sensor on your 2.8 when you did the 7730.  I thought i remembered that you put it into a 90 degree fitting to eliminate the high knock count.  Is that correct?

[f85gtron]

I did use a knock sensor, but found it unnecessary for a factory setup. However, when I went to 3.4, bored, shaved heads, dawg intake, ported, polished, 1.6 rollers, THEN i found it needed

[Fierofool]

Thanks.  I just did a search for 'elbow' and found the thread where you gave the details of the high knock counts and how you installed the sensor on the 2.8.

Are you ready to do installations for others?  Got any prices in mind?  Of course, there will need to be variables depending upon how much your customer provides for the conversion.   

[Lurate]

I'm in Pensacola, Florida. Is there someone in the Georgia Fiero Club that does these conversions for others? I have a 3.4L with the EGR removed that I would like converted.

[GTRS Fiero]

F85gtron did his own conversion.  His free time is sparce, but he does a good job, and is particular with the details.  You could try messaging him.