Juha G

Neel, do you have a 1996 993 you could test this on?
I don't know you but from your previous post I get the impression that you either own a shop or work for one!?

CorrdoBrit

Neel was involved in the development of one of the Singer cars. I think he would be an ideal person to evaluate this ECU.

zechunique

Very very interested in a 95 version; following sign-off and recommendation of this community at large...

SheepHerder

Interested as well

Juha G

So today we tried the prototype on my 993...

First we replicated the fuel and ignition maps from my latest Motec config:



Then some final adjustments:



It was -15 degrees Celsius outside...



But inside it was comfortable +15



Testing and trouble shooting:



Tune software:

Juha G

We were able to fire her up in non-sequential injection mode but while playing with the idle settings, we burned one FET driver due to inadequate cooling. (cooling plates were still missing and in non-sequential mode there is a huge heat load on the drivers).

Here's a video of the first successfull startup. Stay tuned for more updates in the next couple of days...

Lorenfb

"We were able to fire her up in non-sequential injection mode"

The in-car image of the controller appears to be in the same state of development
as the previously posted image (below), i.e. without the main microprocessor
installed???

Juha G

So now when you have nothing else to add you start implying that I am trying to pull out some kind of a hoax here...cheeez....

1. The processor is underneath the top most board.
2. I don't have a penny in this business, nor will have. I am doing this solely because my friend asked me if he could make one for my Porsche and considering there is nothing like this out there for the 1996 993's, I thought it was a splendid idea.

If we ever get this to work, we will send the working proto to a known and good tuner (or a 993 owner who is known here on Rennlist and has access to one) in US who can test it free of charge. If after his report someone feels like they would like to try it as well then it's another story.

Mike J

Looks very cool! Its going to be interesting!

Lorenfb

"The processor is underneath the top most board."

O.K., then out of interest, what is that large empty 40 pin socket used for
on the 'daughter' board?

Juha G

That is where the processor would normally sit but my friend modifies the board (which actually comes with the processor) to enable better overall architecture.

Loren, this was a good question and I am happy to keep answering you if you keep your comments and questions in line.

Lorenfb

"That is where the processor would normally sit but my friend modifies the board (which actually comes with the processor) to enable better overall architecture."

That's great. So where is the microprocessor actually located?

Quadcammer

The only danger I see with this is finding tuners who can adequately tune these vehicles. Even with a decent base map for a stock 993, you will need a very good tuner to dial in your specific vehicle. For a stock or stockish car, I'm not sure how much benefit this will have over a chipped/flashed motronic.

I think this is great for heavily modified cars or those who want to tune themselves. That said, having dealt with cars that need lots of dialing in, it is easy to end up with something worse than stock, especially with respect to driveability.

Nevertheless, more options are always better, so keep at it and good luck.

Juha G

Directly underneath it...

I don't agree with you and here's why; I have 200-cell sport cats on my car, otherwise the engine is stock. So a very minor mod that here many have done to their 993s.
With the original ECU mapping the engine runs lean at WOT (based on white tail pipes after track sessions and a spikey torque curve).
The car made 279hp and 339Nm on an inertia dyno. With Motec we were able to get the A/F ratios corrected and with the new mapping on the same dyno the car made 309hp and 390Nm...
i.e. My engine is far from heavily modified, yet there was a HUGE improvement from re-mapping AND it was running lean with the original mapping. So it is definately not just for heavily modified engines.

I also believe that each engine and setup is unique and the only way to really get the best results is to customize the mapping.
The performance chips you can buy are allways a compromise. (+ you can't even chip or re-flash the 96 ECUs)

Mike J

Yup, you can tune for local conditions as well - Porsche needs to tune for the entire world - so we all get the worse case condition (in a way).

Great idea, keep plugging!