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  1. 02-09-2018 08:41 AM #1
    LocoLobo
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    Avoid Delphi Coil Packs

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    Ok, ok... I know the S4 is a nice car and we shouldn't buy cheap parts, so I know I should've avoided buying Delphi coil packs, but for anyone else out there wondering which coil packs to buy... go with Audi. After a bit over a year of having them installed I've replaced two from complete failure, and had a misfire on 2 more cylinders.

    Just avoid them.
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  2. 02-09-2018 08:58 AM #2
    whiped
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    Portland, OR

    I have AA Ignition coils in my car.

    For some reason, all 6 of my OE coils wouldn't spark my copper plugs very well. These seemed to be a very solid aftermarket option and have resolved my issue.

    New OE ones might have as well but I wanted to try these. Only con is they are slightly more pink than the OE coils.
    Geoff
    '13 █S4 - Glacier White | DSG | 034 Stage 2++ | Current Setup
    452WHP / 443WTQ | 11.352 @ 119.26 | @dirtyaudi
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  3. 02-09-2018 09:27 AM #3
    RWD2quattro
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    Lexus IS250, Volvo 850R, Ford tractor
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    The Bay

    Makes me wonder if the Bosch coils I bought from ECS are faulty. I keep getting misfires all over...
    BMW M4CS, Frozen Blue, Full XPEL, CCB, DCT. Dinan HAS kit, Fall Line end links, Hotchkis sway bars, K&N filters, CF interior goodies. More goods are coming...
    Gone: 2014 S4, Audi Exclusive DRM, 6MT.
    Gone: 2012 S4, Brilliant Black, Prestige, S-tragic.
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  4. 02-09-2018 09:29 AM #4
    SteveYem
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    Empty...for now...
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    SE PA

    Quote Originally Posted by LocoLobo View Post
    Ok, ok... I know the S4 is a nice car and we shouldn't buy cheap parts, so I know I should've avoided buying Delphi coil packs, but for anyone else out there wondering which coil packs to buy... go with Audi. After a bit over a year of having them installed I've replaced two from complete failure, and had a misfire on 2 more cylinders.

    Just avoid them.
    Quote Originally Posted by RWD2quattro View Post
    Makes me wonder if the Bosch coils I bought from ECS are faulty. I keep getting misfires all over...

    Out of curiosity, what were your reasons for replacing the stock coil packs? Just routine replacement due to poor performance / high mileage?
    SOLD 2015 Daytona Gray S4
    6MT / Sport Diff / B&O / Tech Pkg / Carbon Atlas / Black Alcantara
    Mods: Xpel Ultimate, 3M Color Stable Tint 35%, Bilstein PSS10, Euro Code Alu Kreuz, Eurocode Sway Bars, Moog Endlinks, CR-15, Eurocode Meisterwerk ASTS, AWE Resonated Touring Exhaust, 034 Transmission Mount, HCX LED 3000k Fog Lights, Apikol Rear Diff Mount
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  5. 02-09-2018 09:30 AM #5
    cspcrx
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    My Garage
    2009 Tacoma, 2007 Harley Softail, 1986 Honda CRX
    Location
    Phoenix, az

    I'm over 80K miles on my car are these are part that should just be replaced or are their just some bad ones out there?
    2012 Ibis P+ / DSG / Silk Napa / B&O / Sport Diff. / ADS lite / MMI & Nav / APR Stage 2+ & TCU Tuned / Ultra Charger / 184mm KI LIL BITCH / ECS Kohlefaser Luft-Technik Intake / AMS Alpha Cooler / ECS 2-Piece Rotors / Akebono Pads / VMR 803 19x9.5 ET45 265-35-19 PSS / ECS Drivetrain Bushing Inserts / CR-15

    11.8 @ 116mph 2487DA on 93oct file Stage 2+

    THEN THEN THEN Rinse & Repeat!
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  6. 02-09-2018 09:51 AM #6
    chilort
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    As a former Delphi engineer, I approve of this message.

    Also in for why you replaced the stock units.
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  7. 02-09-2018 10:06 AM #7
    doughboy17
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    2007 Audi A4 3.2 Quattro; 2021 Mazda CX-5 Turbo Carbon Edition (my wife's vehicle)
    Location
    Central IL

    Quote Originally Posted by chilort View Post
    As a former Delphi engineer, I approve of this message.

    Also in for why you replaced the stock units.
    Ditto. My modus operandi has always been not to replace them unless faulty but to keep a couple in the trunk just in case they are needed. As long as you have a OBD2 dongle in the car, you can ID the misfiring cylinder and replace it on the side of the road (worst case).
    2014 Monsoon Gray S4 Prem+ | S-Tronic w/ EPL tune | LH Magma Nappa leather interior | Carbon Atlas inlays | Sports Diff | Adaptive Damping suspension | 19” peelers | MMI Nav | B&O | EPL Stage 2 via JHM 179mm crank pulley | Resonated AWE Touring w/ 102mm tips | ECS silicone intake tube with aFe filter | RKX tranny mount insert | tints | VAG COM mods via OBDeleven | Autostyle Mats
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  8. 02-09-2018 10:29 AM #8
    LocoLobo
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    I replaced my original ones at around 100k because of random misfire and random rough idle. The Delphi's did alright at first, but showed their true colors after a while.
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  9. 02-09-2018 10:40 AM #9
    RWD2quattro
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    My Garage
    Lexus IS250, Volvo 850R, Ford tractor
    Location
    The Bay

    I had close to 70k miles and soft misfires, being proactive.
    BMW M4CS, Frozen Blue, Full XPEL, CCB, DCT. Dinan HAS kit, Fall Line end links, Hotchkis sway bars, K&N filters, CF interior goodies. More goods are coming...
    Gone: 2014 S4, Audi Exclusive DRM, 6MT.
    Gone: 2012 S4, Brilliant Black, Prestige, S-tragic.
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