vs
Ignition coil DELPHI or HITACHI
I also ordered four (4) new ignition coils from Hitachi, installed them 60 miles ago and it's been smooth since the installation. My car is quieter, more responsive, and idles better. No, check engine lights at all.
Pros: quieter, more responsive, idles better
Mileage: 96 km
Did this conversion on my 2001 Audi A4 with a standalone. I ran it with stock (3ms) dwell and up to 5ms dwell and didnt notice any difference. I was running Hitatchi coils before and would notice slight bumps in idle. Now all I hear is smooth butter at idle.
Pros: smooth butter at idle
Cons: no noticeable difference
Vehicle:
Audi A4
The old AWD hitachi coils are far more reliable in my experience. I would not change to the awp style from the bolt downs. I have had ~8 failed AWP coils over the years on my 2001 audi/2002 gti and I have 8 hitachis now in my 2 1.8t's for a few years now and no hitachi failures. This is with track days on the gti. They also bolt down so you won't have them popping up on you whack a mole style like the awp ones sometimes do
Pros: more reliable, no failures
Cons: awp style unreliable
Vehicle:
Audi
Don't replace ignition coils until one or more gives out, then I would look into replacing them all with Hitachi E ignition coils (bolt-downs).
Pros: Hitachi E ignition coils
To make a story short, and have a happy ending like me , just buy the 1.8 T coilpack (coil-on-plug x 4) manufactured by Hitachi (Japan). They have the top of the plug filled with some ceramic epoxy-like stuff that seems really sturdy and heatproof. I bought them at ECSTuning.com over a year ago, and they haven't failed not even once.
Pros: sturdy and heatproof
Cons: OEMs sucked big time
best ignition coils ever. i've been through two other OEM revisions before finally getting the Hitachi bolt-downs from ECS.. and i've been misfire free for about 6 months now!
Pros: misfire free
just put hitachi's in my aww. literally 2 miles after i got it chipped, #2 and 3 blew out the older styled black ones that were in there. no problems with the hitachi's yet
Pros: no problems yet
Mileage: 3 km
Stick with the Hitachi coils. I only had one fail in 80K miles on my car and 40k of that is BT.
Pros: one fail in 80K miles
Mileage: 128747 km
I had the snap in Bremi coils in my 2001 AWW and I replaced them with the Hitachi coils. It smoothed out my idle quite a bit.
Pros: smoothed out idle
Vehicle:
Volkswagen
Car always kills them. I was the most surprised when it killed the Hitachi coils.
Cons: coils get killed
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