[s-cars] 034 HO Coil w/ AAN ECU?

Wed Dec 2 13:57:40 PST 2009

Hey Mike - Yes I'm converting the 3B ignition to AAN in the urq.  I like the
idea of the 034 HO Coils because I can use the plug wires I have (3B) which
work great with the 7A VC - rather than the stock AAN setup with coils
literally on the end of the plugs. Wouldn't be able to use the 7A VC...

And a few months ago I picked up (at a good price) what looks like a brand
new 034 HO coil set from a local S-car being parted - not a spec of dirt on
the coils or anything - I wonder if they were ever even used frankly....  

Like I said I don't really know much about the failures - and I don't care -
they may not be related - all I do care about whether or not people are
seeing ECU issues with the 034 HO coils setup - so far nobody has said they
have.

Are you running the ol' F5DPOR plugs?

Brandon

----Original Message-----
From: Mike Sylvester [mailto:mike at urq20v.com] 
Sent: Wednesday, December 02, 2009 2:34 PM
To: Brandon Rogers
Cc: 'Manuel Sanchez'; s-car-list at audifans.com
Subject: RE: [s-cars] 034 HO Coil w/ AAN ECU?

By ignition chip, do you mean the eprom that gets replaced in an upgrade? I
would find that very surprising that an aftermarket coil could cause the
ignition eprom to go bad. That chip is not driving anything external to the
ECU. It just contains the map.

WRT to the 034 coil solution, I have had these for a few years. You can find
some installation photos on my site.
http://www.urq20v.com/My_other_cars/S6/S6_repair.htm

I also went with the 1.8 coils at first and replaced 2 in 2 weeks. I now
believe that the coil failures are due to bad plugs.

I had to have the HO coils replaced after about 10k miles.
It seemed like something corrosive leaked out of the coil into the connector
and melted them away. It was bad on one and starting on another.  034
replaced them all.  It has been another 40k without an issue.

I don't know if he has changed the plug wires that he ships, but the ones I
got, were too long to re-install the center part of the cover. I have since
reworked some 3B wires and machined the inside of my cover so that it fits
properly.

If you are going to use these on your 3B, the you can swap the ends from the
034 wires onto yours so that they fit the coils.

All in all they are working for me, but I have to think there is a cheaper
solution out there now.

Mike

www.urq20v.com

> -------- Original Message --------
> Subject: Re: [s-cars] 034 HO Coil w/ AAN ECU?
> From: "Brandon Rogers" <brogers at terrix.com>
> Date: Wed, December 02, 2009 12:06 pm
> To: "'Manuel Sanchez'" <manuelsanchez at starpower.net>, 
> <s-car-list at audifans.com>
> 
> 
> I don't know the details - but do know the failures I was told about 
> do _not_ have to do with being "chipped" - but the way I understand it 
> is some AAN ECUs are failing - and it is the ignition chip within the 
> ECU - he _thinks_ it _might_ be due to aftermarket coil systems.  
> Again - just his theory.  That's why I'm curious about people's direct 
> experience with this particular coil setup (034) - as I have one I 
> plan to use...
>  
> So far people here seem to have had good experiences....
>  
> So to reiterate:
>  
> Facts:
> There have been ignition chip failures in some AAN ECUs
>  
> Theory:
> Might be due to aftermarket ignition (coils) - didn't say what kind - 
> don't know if he even knows...
>  
> Brandon
> '84 urquattro 20Vt
> '01 S4
> 
> -----Original Message-----
> From: Manuel Sanchez [mailto:manuelsanchez at starpower.net]
> Sent: Wednesday, December 02, 2009 6:26 AM
> To: s-car-list at audifans.com
> Cc: brogers at terrix.com
> Subject: [s-cars] 034 HO Coil w/ AAN ECU?
> 
> 
> Brandon,
> 
> I've had the 034 HO coils on my RS2'd car for a couple of years now as 
> well.
> 
> I had some initial "teething" problems that in the end turned out to 
> be a bad ignition wire (it had a knick in it). Once that was chased 
> down it has been trouble free (knocks on wood).
> 
> My OE setup failed about 15,000 miles ago, so I obviously can't 
> compare the longevity question with regard to the OE vs 034 systems.
> 
> I must admit however that in the dark days on trying to chase down 
> what the problem was with the new system I told myself that I should 
> have just bought the more expensive OE Coils and OE POS's, after all, 
> they lasted 100,000 miles.
> 
> Having said that. the 034 HO system is very simple to install, and the 
> new ignition wire boots are of a different length that allows you to 
> place the coil pack cover overtop them spark plug wells so you can 
> keep the crud out.
> 
> 
> I am curious though about these ECU chip failures you write about. Can 
> you expand a bit more on what the theory or evidence has been? What 
> aftermarket systems have "caused" or been thought to cause the Chip 
> failures? Why does this person surmise that the coils have caused an 
> ECU problem.
> 
> Regards,
> 
> Manny
> 
> 95.5 ur S6 Avant (mostly RS2'd)
> 
> 
> On Dec 1, 2009, at 10:04 PM, s-car-list-request at audifans.com wrote:
> 
> 
> ------------------------------
> 
> 
> 
> 
> Message: 2
> 
> Date: Tue, 1 Dec 2009 14:53:55 -0700
> 
> From: "Brandon Rogers" <brogers at terrix.com>
> 
> Subject: [s-cars] 034 HO Coil w/ AAN ECU?
> 
> To: <s-car-list at audifans.com>
> 
> Message-ID: <636621FF56584C19A95437D476CAA475 at BCROGERS>
> 
> Content-Type: text/plain; charset="us-ascii"
> 
> 
> 
> 
> Guys-
> 
> Curious what people know about using the 034 HO Coils with the AAN 
> ECU.  Are
> 
> many guys here using the 034 HO Coils?  (Or mostly 1.8T coils (I don't 
> want
> 
> to do the 1.8T coils)).  Do you guys know of people having any issues?
> 
> Reason I ask is because I know somebody who is seeing a fair number is
> 
> ignition chip failures within the AAN ECUs and he thinks they MIGHT be
> 
> related to aftermarket ignition (coils).
> 
> 
> 
> 
> Any BTDT?
> 
> 
> 
> 
> Brandon
> 
> '84 ur-quattro 20Vt - going COP
> 
> '01 S4
> 
> 
> 
> 
> 
> 
> 
> 
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