[s-cars] 1.8t coil conversion saga

[Marc Swanson]

I should probably through my $0.02 in here.

I ran the 1.8t coilpacks for a while on my S6 avant.  When I was running
motronic with a custom Mihnea chipset I didn't have any failures on the
street but at the race track I was tossing coils left and right (4 on
different cylinders at a single track event).  I have never run the
coilpack cover when I was running the 1.8t coils.

Those were all coilpacks with part numbers ending in 115L.  From what I
understand, the latest revision is 115R which may or may not be less
prone to failure.


As another data point, I converted my car over to 034EFI StageIIC
standalone engine management which lets me control the dwell map sent to
the coils.  It wasn't very long before I ripped the 1.8t coilpack
harness off the car.  The most base dwell I could run was about 2ms
without blowing up coils.  For reference I now run remote mounted coils
with 8ms base dwell with no issues at all.


Here's a pic of the remote coil setup on my car running via motronic
(though I'm running standalone full time now, so no more MAF :) )

http://www.theswansonfamily.us/modules/gallery2/d/38869-2/IMG_1799.JPG

My recommendation would be to try running the 115R coils to see if they
are more reliable on your car.  If they still fail, I think you might
want to look long and hard at replacing whatever coil pack or pos failed
on your factory components and put those back into service...



-- 
Marc Swanson
95.5 //S6 Avant
90 CQ 3.6 V8tt project car
90 90q20v