ZR-1 Net Registry Forums - New ECU project

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- C4 ZR-1 Technical Postings (http://zr1.net/forum/forumdisplay.php?f=9)

- - New ECU project (http://zr1.net/forum/showthread.php?t=21249)

GOLDCYLON

06-21-2017 11:59 AM

Re: New ECU project

Keep us posted this maybe a future alternative in keeping the beast alive. GC

tpepmeie

11-22-2017 06:43 PM

Re: New ECU project

1 Attachment(s)

Almost ready to fire up the new ECU. Calibration interface really wasn't that complex. I think I got a decent base map to start. LIfe Racing F88. 16 injectors, wasted spark stock coils, for now. COP capable.

tpepmeie

11-22-2017 06:59 PM

Re: New ECU project

Quote:

Originally Posted by tpepmeie (Post 259702)

BTW, as far as I can tell, the stock ECU based on the Motorola 68HC11 chip runs at 2Mhz. The Life Racing unit runs at either 40 or 56 Mhz, I'm not totally sure. But it's fast!

2Mhz was probably state of the art in 1987 automotive controllers.

56mhz Freescale processor from what I understand, FPGA for engine position/timing calculations. This is the bomb.com.

XfireZ51

11-23-2017 07:50 AM

Re: New ECU project

Quote:

Originally Posted by tpepmeie (Post 271036)

56mhz Freescale processor from what I understand, FPGA for engine position/timing calculations. This is the bomb.com.

Todd,

So u won’t be using the crank sensor for firing, if I understand correctly? Is this tuning on engine dyno or in the car and on the street?

tpepmeie

11-23-2017 08:02 AM

Re: New ECU project

No it definitely uses the crank and cam sensor. What I meant was that Life uses separate processor to monitor and manage the time critical signals rather than tie up the main processor. Not a big deal for the LT5 running a mere 7k rpm and only having 9 crank teeth per rev. With a more dense trigger wheel and 5-figure revs it probably matters [emoji1303]

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-=Jeff=-

11-23-2017 10:53 AM

Re: New ECU project

I would imagine the FPGA does all the time critical work.. They are extremely fast and very time accurate.

I think many aftermarket ECU for our cars would benefit us..

for most the MS3-pro if they ever get around to releasing it.. but I heard the Holley HP is another decent ECU too and I now it runs a LT5

tpepmeie

11-23-2017 11:23 AM

Re: New ECU project

Quote:

Originally Posted by -=Jeff=- (Post 271048)

Ibut I heard the Holley HP is another decent ECU too and I now it runs a LT5

Really? That's news. didn't know that one had been used on an LT5.

-=Jeff=-

11-23-2017 05:01 PM

Re: New ECU project

Yes.. a 58 Corvette with the LT5 and Holley HP system. I have an email from the builder on what he did..

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tpepmeie

12-04-2018 07:05 AM

Re: New ECU project

2 Attachment(s)

Finally found coils that fit. Getting back to this project now that there is a lull in customer work. Hope to run on the new ECU in the spring.

-=Jeff=-

12-04-2018 07:15 AM

Re: New ECU project

Quote:

Originally Posted by tpepmeie (Post 286858)

Finally found coils that fit. Getting back to this project now that there is a lull in customer work. Hope to run on the new ECU in the spring.

Hey Todd, would you mind sharing the details on the Coil you found? what application is it from?

EDIT: I ask because I am looking into ECM/IM alternatives to see what might have a chance to work

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