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BMW 3-Series (E90 E92) Forum
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PR coils - your next bolt on?
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12-30-2018, 11:16 AM | #1 |
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PR coils - your next bolt on?
https://bmw.spool street.com/threads/vtt-precision-raceworks-coil-install-results-thread.1838/
(Remove the space ) Is this basically adding ignition advance or what? |
12-30-2018, 11:43 AM | #2 | |
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12-30-2018, 01:52 PM | #3 |
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What coils are those? The only n52 coils I have seen are the Plasma Direct coils and they are $1k for a set for n52:
https://store.activeautowerke.com/pr...all-bmw-models When these coils were last discussed the consensus was everyone would be surprised if they made any difference whatsoever. |
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12-30-2018, 05:12 PM | #4 |
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interesting that they claim more hp but theres no dyno's in the marketing material. AA site shows $800. I guess if they last 4x as long as stock coils and you keep your car long term its not really a bad deal.
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12-30-2018, 08:45 PM | #5 | |
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I had 205,000 miles on the original N52 coils when I swapped cars. This sounds like "snake oil" to me. |
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12-30-2018, 09:23 PM | #6 | |
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If someone is really concerned with making a product that shows benefit they will take the time to verify it. |
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12-31-2018, 12:00 AM | #7 |
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Snake oil. If it did half of what they say, they would already be used on production cars. For 1k, a total waste of money.
Stock coils certainly last longer than 70k miles. At 145k I have replaced one. At this rate I would have to drive several million miles to break even.. |
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12-31-2018, 02:32 AM | #8 | |
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12-31-2018, 08:30 AM | #9 |
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Using an oscilloscope you would be able to see the difference between the stock and performance coils. Some of you should test it out before making the assumption.
I'm not sure if PR coils are real stuff. But I have Okada Plasma Direct which is the same as Ignition project. |
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12-31-2018, 08:32 AM | #10 | |
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12-31-2018, 09:17 AM | #12 | |
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12-31-2018, 09:34 AM | #13 | |
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For the record I wouldn't pay a grand for coils though and doubt they do anything.
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12-31-2018, 10:39 AM | #14 | |
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12-31-2018, 11:30 AM | #15 |
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The original link to the PR coils are for N54/N55. Once you get above 500whp stock coils pop all the time. I doubt they would work on a N51/2. The PR coils work as they are more powerful for high boost. This has been reported by a lot of people. The VTT dyno graph is questionable, but they didn't have a reason to fake the numbers.
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01-01-2019, 12:39 AM | #16 |
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Like I mentioned earlier, I cannot speak for PR coils.
But for Okada and IP coils, I think there's a misconception, they are not meant to last forever, they do fail over time due to overdue spark plugs or the coils fail just like any coils in the market. The difference is the stock/base coil is single spark; the OKADA and IP are multi-sparks.
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01-01-2019, 06:46 AM | #17 |
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So here’s some mixed reviews...
Negative: https://bmw.spoolBLOCKEDstreet.com/t...eal-deal.1852/ *Remove “BLOCKED” Positive: https://www.audizine.com/forum/showt...38-spark-plugs |
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01-01-2019, 08:51 AM | #18 | |
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01-01-2019, 10:10 AM | #19 |
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I tried my best to translate everything, All the credits go to my friend who performed the test.
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3IM . Okada Plasma Direct . Euro Ram Intake . AA header (Pending) . PE . 2nd Cat Delete . F30 340mm 6 pot . EBC Yellow Stuff . StopTech SS Brake Line . BMW Performance CF Strut Bar. 219M . PSS
Last edited by Blueeyesredpanda; 01-01-2019 at 10:16 AM.. |
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01-01-2019, 11:13 AM | #20 | |
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Last edited by PORTMOODY; 01-01-2019 at 11:26 AM.. |
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01-01-2019, 12:15 PM | #21 | ||
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To update myself, I've been doing a little research on how modern ignition coils work. I'm under the assumption that the coil is "charged " by a feed current flowing from the DME and releases a high voltage surge when the DME stops the feed current. It's a "one shot" deal. Build and release cycle. There are segments within the DME program that call for multiple sparks per stroke but I assume these are part of a start sequence or low RPM warm up procedure. Either way, it's controlled by the DME a not the coil. The best way to achieve a clean power stroke is through a good single spark with the correct timing and dwell. Dwell also controlled by the DME and needs to match the characteristics of the coil. I am really trying to figure out why / how BMW screwed up the specification for the N54. It's hard to believe that it's something they can not overcome. Found a good article for those interested. http://dtec.net.au/Ignition%20Coil%2...alibration.htm |
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01-01-2019, 12:34 PM | #22 | |
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Yes the OKADA uses the Bosch case, I can confirm that. But have you thought about the internal components are different than stock. Or why their coils are able to perform multi-spark. IMO at his point it doesn't matter what PR was going to do because they pretty much lied about the bench test result in order to promote their coils. Just because one company could be selling snake oil doesn't mean the rest are Last edited by Blueeyesredpanda; 01-01-2019 at 12:41 PM.. |
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