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garyw · Posted: Sun Apr 01, 2007 10:25 am Post subject: Re-chipped computer

Has anyone tried re-chipping their 931? Has it made a difference and how much did it cost?

Thanks

Smoothie · Posted: Sun Apr 01, 2007 10:46 am Post subject:

Hey what's all this talk about re-chipping the computer? Most of us, after dropping the computer once, have learnt our lesson and just don't do it again. Be careful out there peeps!
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"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

I've got a 931 chip I am willing to sell for $450.
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

Smoothie · Posted: Sun Apr 01, 2007 10:50 am Post subject:

Ok, that was hillarious, but now the real answer - there is no chip to replace on the 931. That business started with the 944-924S Motronic engine management.
_________________
"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

Smoothie · Posted: Sun Apr 01, 2007 10:54 am Post subject:

No Rasta, you can't sell that little piece that broke off the corner for $450 here.

Take it to eBay or the Cars and Parts Wanted/For Sale section.
he-he
nyuk nyuk nyuk
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"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

garyw · Posted: Sun Apr 01, 2007 11:55 am Post subject:

The company I found is called Upsolute. They don't really re-chip the computer, they claim to reprogram it. They admit to not having done a 931 but don't see why it could not be reprogramed.

What do you think?

Chrenan · Joined: 15 Jan 2003 Posts: 3903 Location: Canada

Isn't the 931 similar to the 924 in that regard? It has mechanical fuel injection, the fuel delivery is totally determined by airflow past a pressure plate. There is no computer control for the fuel delivery, so there is nothing to re-program. Yes, there is a fuel pump relay, but that is essentially an on/off device, not a computer. That is my understanding.
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1987 951 - M193 Version for Japan

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

924RACR · Posted: Sun Apr 01, 2007 10:35 pm Post subject:

Vince Ponz · Joined: 02 Nov 2002 Posts: 3581 Location: Florida

Replace the turbo boost spring. Ask Soyracer he has one and I bought one from him.
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"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Ooooh yeah, and I have one of those for sale, too!

No, really, it is a Weltmeister 1.0 Bar spring, I will sell for $75.

(non-smartass) rasta
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

garyw · Posted: Mon Apr 02, 2007 11:13 am Post subject:

It sounds like a resounding 'don't do it'. Thanks everyone. I will pursue the more typical route.

Regards

Raceboy · Joined: 01 Mar 2004 Posts: 2327 Location: Estonia, Europe

It says that YOU CAN'T DO IT, BECAUSE THERE IS NO ECU on 931!

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'83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
'78 924 Carrera GT replica
'84 928 S, sold
'91 944 S2, sold
'82 924S/931 "Gulf", sold

'84 924, turbocharged, sold.
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81turbo · Joined: 03 Nov 2002 Posts: 1065 Location: Oakland, CA

I have a NOS 81/82 931 oxygen sensor computer if anyone wants it. Never installed (but has been tested). $40

924RACR · Posted: Wed Apr 04, 2007 3:39 am Post subject:

Even better, if you can find one of the rare JDM ECU's, they pop up some times on Ebay...

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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
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