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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 11-03-2012, 04:52 PM
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halltristan halltristan is offline
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High Performance Ingnition Coils

What's everyone's thought on the Bavauto High Performance Ignition Coils? Waste of money or necessary upgrade?
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  #2  
Old 11-03-2012, 09:42 PM
GoForthFast GoForthFast is offline
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Waste of money
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Old 11-03-2012, 11:01 PM
cvx5832 cvx5832 is offline
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Waste of money. If Bosch/Bremi/BMW could increase their performance, CAFE ratings and fuel economy with a simple hardware edit, they probably would have already. As one poster put it to bavauto, dyno or it didn't happen.
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Old 11-04-2012, 04:29 AM
Jimmys 530i Jimmys 530i is offline
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Waste of money. One of my customers bought them, and after I installed them there was no noticeable difference. He even had two of them go bad.
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  #5  
Old 11-04-2012, 05:30 AM
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halltristan halltristan is offline
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Originally Posted by cvx5832 View Post
Waste of money. If Bosch/Bremi/BMW could increase their performance, CAFE ratings and fuel economy with a simple hardware edit, they probably would have already. As one poster put it to bavauto, dyno or it didn't happen.
That's what I figured. So when changing spark plugs, would you also change the boots, the boots and coils, or just the plugs?
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Old 11-04-2012, 05:48 AM
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Quote:
Originally Posted by halltristan View Post
That's what I figured. So when changing spark plugs, would you also change the boots, the boots and coils, or just the plugs?
Depending on your mileage I would just do the plugs unless you have a misfire or some other issue.

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Old 11-04-2012, 10:27 PM
GoForthFast GoForthFast is offline
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Many say the boots are worn out by the time you need new plugs. They dry up and crumble.
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Old 11-05-2012, 04:16 AM
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halltristan halltristan is offline
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Originally Posted by GoForthFast View Post
Many say the boots are worn out by the time you need new plugs. They dry up and crumble.
Do the coils ever wear out?
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Old 11-05-2012, 04:30 AM
jdauria jdauria is offline
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waste of money. You will not see power gains unless you FI,supercharge,engine swap.
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Old 11-05-2012, 08:40 PM
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Garbage...If you are using the 3 Triangle Pin Bosch Coil Packs. They are good up to 800 or so WHP without using any type of plasma lift to boost the spark efficiency.
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