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  • Donating Members
  • Member For: 17y 9m 18d
  • Gender: Male
  • Location: Broady, Melbourne

No Spiko. I am using genuine ford coils ATM but plan on trialling the Weapon-X coils on my big banger.

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  • Member For: 20y 1m 29d
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I respect honesty Steph :beerchug:

I’ve always been one for improving ignitions systems.

I even ran a MSD & Mallory coil on my XB V8 back in the 70’s and swore by it.

I currently run a CDI on my STi that is set up to rev to 8000rpm.

I looked into CDI options a few years ago with my big motor on the Ford. That engine spins to around 7200 pretty regularly, and still makes good (over 600rwkw) power at that rpm without falling over, WITH standard coils.

To take development forward, I then read various M&W manuals, got pricing options, and reviewed HKS multi-spark options.

I also contacted MSD in the US about their “Stacker” product, and sent them a Ford wiring diagram for assessment, and they concluded that it could work and not interfere with the Ford canbus. I decided I did not want to be the guinea pig.

I asked Tunehouse to get data on the ignition voltage at different rpms for that Ford engine, how well the voltage was holding, and potential gains to be had with upgrading. The conclusion was that the stock system worked very well, (better than I expected) and that it was probably not worth the effort and cost when I was chasing extra power.

So I did not pursue it. Having not pursued it you cannot rule out that it could be beneficial.

On my STi the engine is noticeably very smooth above 5000, partly because it is well built motor, and because of the CDI. That is the car feels much better, of course in conjunction with a good tune.

With a multi-spark discharge and/or better spark at higher rpm you can also run bigger spark plug gaps, or alternatively not reduce the plug gap if that was what you were doing previously.

In a daily driver situation I doubt that the better coil will give you much benefit, and as Spiro stated it is better targeted at high rpm application, but then you really need CDI to get the most out of it.

If you are changing coils for reliability reasons then that is a valid reason.

In this case if you want to check the new coil attributes it would be best to do a voltage analysis, check before/after drivability, fuel consumption and dyno assess the change.

Then compare that with what the manufacturer has claimed.

Good luck,

Brian

BUMP +1 (READ):beerchug:

  • Donating Members
  • Member For: 17y 9m 18d
  • Gender: Male
  • Location: Broady, Melbourne

lol

Haven't you already had a set of these fail on you Straughs?

Actually in hind-sight, I think not. I had other issues related to valve springs and a cam angle sensor at the same time which I kind of wasn't aware of. After I put the original coils back in, I had similar issues and that's when I discovered the cam angle sensor problem. I quickly rectified it by plugging the plug back in properly :)

In the end, I am almost 100% certain that it wasn't the coils causing the misfiring issues as they all but disappeared once the cam angle sensor was feeding data to the ECU! Regardless, the service I received was that good that I will be giving them another shot on the big banger. When I know everything else is in place I should be able to ascertain how they perform.

Edited by straughsberry
  • It's All In Your Mind
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  • Member For: 21y 7m 7d
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  • Location: Melbourne

I will await more testing before I get the Allen Keys out, the one at the back is a bugger and the car is probably running the best it has for a long time. It ain't broke so I'm not gonna try and fix it.

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  • Member For: 19y 16d
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  • Location: Sydney NSW

Has anyone tried FG coils (and cam cover) on BA BF?

The coils bolt down to the cover and are sealed in... Ive been running mine sans plastic cover for a few months now.

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  • Member For: 16y 10m 26d
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  • Location: Brisvages, Capalaba

well I can only wait til my car is finished at hi-torque and I get to drive it, til I add my verdict.

  • 1 month later...
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  • Member For: 16y 6m 20d

Do you think the WEAPON X product would perform better if it was ran in conjunction with a CDI?

I was emailing greg about using these with a CDI as im running an autronic 500r cdi...he said they will 'not' work, but he is trialling some that he will run with cdi...my tuner said he is going to stick to standard coils to start with so ill go by that..wouldnt they get fried if a higher voltage was put through them?

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