[urq] ABT ignitionbox

[urq]

... I was surprised to see that this was not mentioned already ... 

To my mind and IME, the person who started much of this madness was Robert
Houk, and to this date his open source information is quite useful and tough
to beat!  While "RDH" has moved on, fortunately he has left his website
intact.  I heartily encourage all urquattro fans to become familiar with the
following page:

	http://www.tiac.net/~rdh/http/Urq/index.htm

IIRC from this site you will find the binary for a chip that will plug into
your MAC-02 and address some of the issues from the factory (but finding the
requisite EPROM device might be daunting).  The thing is that the chip is
only half the answer to increased output from the WX.  You need to do
something to increase the maximum boost that the engine will produce.  This
is done by modifying the wastegate.  Most people install a stiffer WG
spring.  I opted for Paul Timmerman's Schrappnell Knobben, which uses some
of the boost pressure to stiffen the spring in an adjustable fashion.  My
urq ('83 model) also had the adjustable wastegate spring perch in the cap.
In addition to RDH and Schrappnell Knobben, you can do searches for "QLCC"
and such for other information.  

I'd also recommend that you can look through Scott Mockry's website
(www.sjmautotechnik.com) and Martin Pajak's site (www.quattro.ca).  All
these sites and more are listed on the urquattro yahoo group
(groups.yahoo.com/group/urquattro)

... bottom line ... yes, you should be able to plug that ABT box into your
car, but you will not notice much change unless you remove the wastegate
spring from the same car and install it into your wastegate.  BTW, the WG
spring swap is usually quite easily done.  

HTH!
Steve Buchholz

-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On Behalf
Of Paul Ahvenainen
Sent: Friday, September 27, 2013 10:35 AM
To: William Stedman; Keith
Cc: audifans urq
Subject: Re: [urq] ABT ignitionbox

If anyone has an extra ABT or similar "chip" that will work with my
otherwise stock 83WX, I would be interested.

Thanks:  Paul Ahvenainen
-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On Behalf
Of William Stedman
Sent: Friday, September 27, 2013 7:34 AM
To: Keith
Cc: audifans urq
Subject: Re: [urq] ABT ignitionbox

Yes the stock computer can be chipped as I have one from my old 10v. And
some of the things are a Fast Start and Increased boost without running lean
Fast Start makes it so when you are starting the car it doesn't have to
crank over so many times before it fires up, Just hit the key for 1 second
and it fires up!
The addition of a zener diode will make it run lean at top end without fuel
distributor mods!



On Fri, Sep 27, 2013 at 5:06 AM, Keith <spotatashleys at hotmail.com> wrote:

> Hi Pat
> As I understand it, the stock ecu can not be "chipped" in the modern 
> sense. The only mod that can and is made is the addition of a zener 
> diode across a couple of pins (I don't know which but there are 
> diagrams on the
> net) which has the effect of preventing the ecu "seeing" full boost.
> (normally if the ecu recognises that full boost is being exceeded it 
> cuts the ignition to prevent damage). Not "seeing" full boost means 
> that if a stiffer waste gate spring is used then greater boost 
> pressure can be achieved without the ignition being cut. The plus is 
> that you can gain a power increase, the downside is that this of 
> course can put additional unintended strains on components reducing 
> longevity. I believe a 1bar w/gate spring (standard is I think 0.8bar) 
> and the zener diode mod provides approx 220hp as opposed to the 
> standard 200hp on a WR motor. Your friend could swap it in to his 
> daily driver but I am not sure he would see any benefits without an 
> accompanying stiffer wastegate spring but others may be better able to
advise on this.
> Hope this helps.
> All the best
>
> Keith
>
> '87 WR
>
>
>
> -----Original Message----- From: Patrick Carlier
> Sent: Friday, September 27, 2013 11:21 AM
> To: 'audifans urq'
> Subject: [urq] ABT ignitionbox
>
>
> A friend of mine got himself a wrecked urquattro .
> Strted to pull it apart , end he found out that the ignition box under 
> the glove box has a sticker on it ABT .
>
> So he wants to kow what power gain this box could offer , and if he 
> can simlply swap it in his other urq wich is a very good daily driver .
>
> I don't know but maybe someone on this list does ?
>
>
> Pat
> ______________________________**_________________