I had one coil pack go bad so i replaced it car ran great for about 2 days. Then another one went bad so Ive decided to replace all of them. Ive been looking around at ecs tuning and some other sites. Is there any coil packs that are better and not as overpriced as the ones on ecs tuning(i know there cheaper than the dealer.) I have been reading i dont know if this information is correct but they said the s4 coil packs are underpowered. i'm running 18psi. im looking to spend 300. i saw this add on ebay and someone went for it ebay link
So i just want to know should i go for stock ones or are there better and cheaper aftermarket ones.
Thanks. And should i get the bundled spark plugs or just get the cheaper ngk
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