[s-cars] 1.8T coil woes

[Wylie Bean]

I've been running 1.8T coils for about 40K, tracked the car 3X, and have never had one fail?  Wonder what the reasons for the different experieces may be?
Wylie Bean
90 cq
91 90q20v
92 UrS4
08 Q7

-----Original Message-----
From: ron kirkham <rkaudifool at gmail.com>
Sender: s-car-list-bounces at audifans.com
Date: Tue, 1 Nov 2011 13:25:52 
To: s-car-list<s-car-list at audifans.com>
Subject: [s-cars] 1.8T coil woes

So I have been running the Apikol 1.8T coil conversion on my '93 S4 for
several years now, probably about 75-80k mi. (I'd need to check for sure) I
have replaced all coils at least twice and some three times since
installation.  Last week I'm running some errands and did a very short 2nd
gear full throttle pull and got the all-too familiar drop of a cylinder
only worse.  I Limp home about 5mi. and park and leave the engine running.
Very bad idle and very stinky exhaust.  Turns out that I somehow dropped 3
coils at the same time!  Fortunately, I actually had three replacement
coils on the shelf and got her running smoothly again.  I should mention
that all coils were, and are now the "R" suffix coils.

I don't think I want to re-order more 1.8T coils to have on the shelf for
the next failure which is sure to be soon.  I'm tired of it.  I am
considering going back to the old set-up of PSO's and coils as I have all
those parts on hand including one or two stock coils NIB. And one NIB PSO.
Or, I may make the leap to the LS2 set-up from EFI Express or build my
own using these known good coils.  Or, are there other options to look at?
Money is a consideration but I have spent a boat-load of cash on 1.8t coils
over the last several years.

For those of you running the LS2 coils, have there been coil failures?  If
so, how frequently?

I don't much like the idea of going back to the stock set-up as diagnosis
of failures between coils or PSO's is more difficult and replacement of
coils is troublesome also.

The S4 will have 250k mi. on it sometime this month provided I can keep it
running!

Thoughts?

Ron
'93 S4 with too many coils gone bad
'95.5 S6A still fully stock ignition and running fine thanks.
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