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Old 08-28-2012, 09:09 PM   #1
Bdave
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HPF's new Denso Racing Plugs plus OEM Coils

Hi, Chris. Can you our your employees discuss your experiances with the new Denso racing plugs and OEM coils?

1) Are you still recommending NOT to use Okadas in any situation?

2) Are the curves looking much better on "0" smoothing now? They were pretty jagged on Okadas at high boost.

3) Are you retaining the signal enough now that you can display ANY build with HP and Torque axis to the graphs?

4) Are you recommending any different plug ranges (colder/hotter) for different applications like E85 or NOS?

5) is there any reason at all to look into any of the spark boosting boxes available for BMW OEM coils? Or best to leave well enough alone?

5) Any other updates on this new system that might be of interest to us?

Thanks for looking out for us and coming up with a better (and less expensive) way of sparking our builds! I appreciate the CONSTANT research and schooling (ie AEM Infinity, CEL light software) that evolves HPF kits to be better each and every year.
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Old 09-01-2012, 03:09 AM   #2
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Chris told me that HPF can no longer source the constantly back ordered plugs. Alternative method is unknown.
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Old 09-01-2012, 12:20 PM   #3
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Nvm
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Old 09-01-2012, 03:05 PM   #4
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The Denso "Racing" plugs we temporarily switched to we haven't been able to get for several months. Something to do with the earthquake/nuclear disaster in Japan. Once these become available again we may switch back to them.
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Old 09-04-2012, 06:23 PM   #5
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Quote:
Originally Posted by HPF Chris View Post
The Denso "Racing" plugs we temporarily switched to we haven't been able to get for several months. Something to do with the earthquake/nuclear disaster in Japan. Once these become available again we may switch back to them.
Didn't even answer the questions that was asked...
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Old 09-04-2012, 11:49 PM   #6
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Didn't even answer the questions that was asked...
True that. I was lucky enough to get a set of those Densos. Hopefully they will be available again when I need a new set. IDK how long they are supposed to last.

It would be nice to know what options are available for guys that still want to run the stock BMW coils and get good results at high boost. The Okadas just dont seem to be worth the very high cost, only to break up at high boost.
HPF cant even get a good signal from them to post a torque curve. Wasn't that the reason?
Maybe HPF is still exploring other options until those special Denso can be sourced again. I hope they are not going back to expensive and not so effective OKADAS. I really have no idea.

I figured Chris would post when he had something more to say about the whole thing.

I know HPF has been bugging a company to developed a set of coils that would solve many issues with HPF high boost kits. IDK how that is going or if that whole idea is dead. It would nice if it eventually happened.
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Old 09-05-2012, 12:57 AM   #7
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Bdave: Do you by any chance have the Denso number off the plug?
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Old 09-05-2012, 01:37 AM   #8
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Bdave: Do you by any chance have the Denso number off the plug?
No. I will try to get it
It might be IXU01-27. Pricey at 26 to 35 dollars EACH.One guy mentions Densos ixu27 as a MUCH cheaper option at 6 dollars a plug. IDK. The racing plugs are for FI and last 25k miles, so its not the end of the world if they deliver the goods.
see this in the FI section:

http://www.m3forum.net/m3forum/showthread.php?t=350295

I cant confirm yet that this is what HPF recommends. Very possible since the plug fits our cars.
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Old 09-06-2012, 01:33 PM   #9
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My m&w pro16 just arrived today . I forwarded the installation manuel to John so he can get me the pinouts needed from hpf harness. Once he fwds me the info I will be installin it it will be runin 105 mj under 15 psi and 150mj over it.



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Old 09-06-2012, 01:45 PM   #10
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exciting
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Old 09-06-2012, 01:53 PM   #11
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Old 09-07-2012, 08:06 PM   #12
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Quote:
Originally Posted by Providence View Post
My m&w pro16 just arrived today . I forwarded the installation manuel to John so he can get me the pinouts needed from hpf harness. Once he fwds me the info I will be installin it it will be runin 105 mj under 15 psi and 150mj over it.



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That is just great. So, are you going to do a dyno run to compare smoothness of power curves? (Before and after)

The dyno graph of the Stage 3 with Okadas and zero smoothing gets pretty jagged at high RPM.

What is your current set up?
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Old 09-08-2012, 02:41 AM   #13
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Originally Posted by Bdave View Post
No. I will try to get it
It might be IXU01-27. Pricey at 26 to 35 dollars EACH.One guy mentions Densos ixu27 as a MUCH cheaper option at 6 dollars a plug. IDK. The racing plugs are for FI and last 25k miles, so its not the end of the world if they deliver the goods.
see this in the FI section:

http://www.m3forum.net/m3forum/showthread.php?t=350295

I cant confirm yet that this is what HPF recommends. Very possible since the plug fits our cars.
correct
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Old 09-08-2012, 07:54 AM   #14
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Amazon has them:

http://www.amazon.com/Denso-IXU01-27.../dp/B000M6SSRO
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Old 09-08-2012, 09:14 AM   #15
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I used to run the IXU27 plug until I was given a set of the IXU01-27 Racing Plugs. In the time I've had them I've had random misfires (most likely coil related) but will be swapping coils soon to see if that solves the issue. I pulled the plugs two days ago to have a look at them and noticed that the tip of the plugs has started to rotate a few degrees it seems...not sure if its normal but I'll be keeping an eye on them. Another thing I noticed was the copper caps that make the connection to the coil are screw on and were all slightly loose and I had to tighten them. Unsure what that's all about, never had to do that with any other spark plug before.

So far I've had the plugs for about 4000km...I went from a brand new set of IXU27 gapped plugs to the IXU01-27's...didn't notice anything amazing but they worked. I'm currently looking into a totally new ignition as apparently the Okadas have had issues?!?
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Old 09-08-2012, 09:26 AM   #16
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Quote:
Originally Posted by Bdave View Post
That is just great. So, are you going to do a dyno run to compare smoothness of power curves? (Before and after)

The dyno graph of the Stage 3 with Okadas and zero smoothing gets pretty jagged at high RPM.

What is your current set up?

I got oem bosch coils atm , okadas r gone. We will fine tune the car over 20 psi now since we could not do it with okadas due to misfirin. I will put the new dyno chart after we r done with the tune.
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Old 09-08-2012, 08:11 PM   #17
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I got oem bosch coils atm , okadas r gone. We will fine tune the car over 20 psi now since we could not do it with okadas due to misfirin. I will put the new dyno chart after we r done with the tune.
This whole Okada thing is so weird I cant tell you. All along I was under the impression that they were some sort of super coil capable of great things.
Then I found out that they basically were not very good, especially at high boost. If HPF showed a dyno graph at high boost/high RPM with 0 smoothing, it would look pretty jagged in that area...over 6k RPM as I recall. The coils couldnt even send a proper signal to record torque(reason for HPF dyno runs not showing ft lbs of torque.)

Thankfully, HPF has been on the case, trying for years(I think) to get a coil developed for our cars. That will happen some day soon I hope. In the mean time, as many of you might recall, HPF no longer recommends Okadas at ALL any more. They found out that regular BMW OEM coils (fresh ones I would imagine) used with these 30 dollar Denso Racing plugs was a better option. The Denso IXU01-27. I am curious how the MUCH less expensive IXU27 would do in a comparison back to back dyno run.

One thing the racing plugs supposedly have going for them is longevity in a high boost environment. Life time of 25k miles or two years has been reported. IF that is indeed true, then that takes a lot of the sting out of the initial cost.

Other options are Pro EFI coils with SAAD brackets. But you have to get your HPF DME coil trigger re programmed. And the expense is considerable compared to simply using the DensoIXU27's or IXU01-27.

Sorry for the long post but I re hashed old news since some readers may have missed the whole Okada junking. It was not heavily discussed really.
The story is far from over. There has not been a whole lot of E46 HPF history on the use of these plugs. I dont even recall seeing a single dyno graph. Can anyone provide one?

Then there is a whole slew of spark boosters on the market or you can completely change your entire ignition system. I hope the simplest and least EXPENSIVE solution works just fine...OEM coils + Denso racing plugs.

That's why I started this thread. To see how many guys were actually using them with OEM coils that are reasonably fresh. And how LONG are the OEM coils going to hold up with the Denso's? All good questions dont you think?
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Old 09-08-2012, 11:48 PM   #18
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Sh!t, so who wants to buy some Okadas?
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Old 09-09-2012, 12:09 AM   #19
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Sh!t, so who wants to buy some Okadas?
Sell them on M3forum. they are clueless to HPF news for the most part.
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Old 09-09-2012, 01:25 AM   #20
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Sell them on M3forum. they are clueless to HPF news for the most part.
I sold mine on eBay.. They went for $226 bucks..was almost worth just keeping them at that amount.
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