[V8] ECU part numbers

[Andrew Schlueter]

I am dogin a 5spped conversion on my '90. What would be the ecu
difference? Separate harneses for ecu and tcu

Andrew W. Schlueter
'90 Audi V8 Quattro


-----Original Message-----
From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf
Of Tim Hollister
Sent: Friday, December 01, 2006 3:07 PM
To: getur at optonline.net; v8 at audifans.com
Subject: Re: [V8] ECU part numbers

you can, I don't know what differences IA did as far as if they started
with a mt ecu or a at ecu.
the mt ecu would be the same hardware but different timing maps. the IA
stuff should negate the difference between the at and mt ecus.


--- getur at optonline.net wrote:

> 
> 
> ----- Original Message -----
> From: Tim Hollister
> Date: Friday, December 1, 2006 11:44 am
> Subject: Re: [V8] ECU part numbers
> To: v8 at audifans.com
> 
> > I have all the info on those.
> > 
> > the 404c is the original ecu for the 90 v8q, the 404hx series are 
> > the newer ecus (started in 91) and do replace the c. the hx series 
> > also provides a performance increase in low end torque and overall 
> > drivability.
> > 
> > If you are replacing the h with a c then swap the prom chips and go 
> > with that. the physical hardware is the same.
> > 
> > I have a ecu if you need one.. its a c with the h code. works 
> > perfectly.
> > lmk.
> > 
> **********
> Any difference in the ecu's between an automatic and manual? Can I use

> an ecu from an automatic for an IA chip upgrade and put it in a
manual?
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