ECM upgrade (1227730) for stock 2.8 (Page 95/107)
The Aura AUG 23, 12:45 PM
Folks,

Can a 7727 or 7730 ecm be made to work with a 3.4 TDC or DOHC?
The Aura SEP 05, 02:39 PM
Bump for 3.4 TDC question.
DavidM SEP 07, 12:14 PM
Back to working on my beloved Fiero project (my best friend who built it's engine passed away which took a while to get over)

The 1227730 upgrade sounds like the way to modernize the 2.8 and smooth it out. I am keeping the 2.8 in mine so that when the DOT folks in Austin look at it
they will not give me any emissions grief (I have modified the car enough already) Maybe a V8 or a Merlin Engine Later.

Did anyone finally produce the egr adapter plate? The thread is quite long now and takes a good while to read through.

Great mod Ryan.

Pictures of my project can be seen here - (ignore the ads)
http://www.findonefindall.c...mboweb/lambo25th.htm

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David Melbourne

olejoedad SEP 07, 08:48 PM
Keeping this fresh..........
DavidM SEP 08, 05:15 PM
Does anyone know if Ryan is still programming the chips for this upgrade? Have had little luck contacting him yet.

Thanks.
Darth Fiero SEP 08, 09:52 PM
Yes I am still reprogramming chips for these conversions. However, I do not work weekends or holidays. I have fallen a bit behind on responding to emails this week because of the holiday - but I am in the process of getting caught back up right now. I did get your email, David, and will be responding to it shortly. I apologize for the delay.

-ryan

[This message has been edited by Darth Fiero (edited 09-08-2010).]

DavidM SEP 09, 07:45 AM
Thanks for getting back to me. I have the computer & a pigtail coming in the mail right now and will forward the memcal on to you.
I intend to make the mod easily reversible in case the Austin, TX Re-VIN DOT people don't like it. (Who knows with them)

My 14 year old is pushing hard for me to finish this car - he thinks he is driving it next. Yeah right.
kennn SEP 09, 11:50 AM
Ryan,

I purchased a TPI set-up and "Integrator" harness from Speed and Performance in Arkansas for my V8 swap. It employs the 7730 ECM and a second box, the Integrator, to connect the Fiero harness to the 8 injectors and other sensors that are V8 specific (knock sensor, no EGR, no Cold Start, etc.). It further requires clipping the 6 Fiero injector leads and EGR wire since the Integrator and chip, as is, eliminates EGR. Reading this topic I get the sense that I may be able to eliminate this so-called Integrator by repinning the Fiero harness, adding the extra injector wires and some grounds and getting the 4 cylinder mounting tray. Am I understanding this correctly? Thanks.

Ken

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'88 Formula V6
'88 GT TPI V8

[This message has been edited by kennn (edited 09-09-2010).]

kennn SEP 09, 11:53 AM
Ryan,

I purchased a TPI set-up and "Integrator" harness from Speed and Performance in Arkansas. It employs the 7730 ECM and a second box, the Integrator, to connect the Fiero harness to the 8 injectors and other sensors that are V8 specific (knock sensor, no EGR, no Cold Start, etc.). It further requires clipping the 6 Fiero injector leads and EGR wire since the harness, as is, eliminates EGR. Reading this topic I get the sense that I may be able to eliminate this so-called Integrator by repinning the Fiero harness, adding the extra injector wires and some grounds and getting the 4 cylinder mounting tray. Am I understanding this correctly? Thanks.

Ken

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'88 Formula V6
'88 GT TPI V8

Darth Fiero SEP 09, 02:56 PM

quote
Originally posted by kennn:

Ryan,

I purchased a TPI set-up and "Integrator" harness from Speed and Performance in Arkansas for my V8 swap. It employs the 7730 ECM and a second box, the Integrator, to connect the Fiero harness to the 8 injectors and other sensors that are V8 specific (knock sensor, no EGR, no Cold Start, etc.). It further requires clipping the 6 Fiero injector leads and EGR wire since the Integrator and chip, as is, eliminates EGR. Reading this topic I get the sense that I may be able to eliminate this so-called Integrator by repinning the Fiero harness, adding the extra injector wires and some grounds and getting the 4 cylinder mounting tray. Am I understanding this correctly? Thanks.

Ken



Yes, you could easily repin and reuse the OE Fiero 2.8 ECM harness on a TPI V8 with a 7730 ECM. All you would need to do is add those two extra injector plugs (tie in with existing injector wiring) and do the same add-on mod using existing EGR wiring for the knock sensor and fan controls. Concerning grounds, if the 7730 TPI V8 ECM wiring has more grounds than the OE Fiero 2.8 harness has in it, it would be a good idea to run new wires for those.