marmski

Has anyone had any experience with such a thing?

OkadaProjects PLASMA DIRECT Ignition Coils! The BEST and ONLY coils available! - IWSTI.com: Subaru STI Forums

Apparently boosts your spark by 100% meaning that you ignite more fuel molicules... would this actually work?

Im assuming it would improve MPG and Power if its claims are sound.

gaddass

Im sure theres better bhp per pound items for sale,youd get a brake upgrade for that money.The science is a bit wobbly as well,just because the amperage is higher doesnt mean youll get better ignition and youd need a remap on top of the 690-00 if it was effective pushing it to over a k.Thats a lotta petrol to save.

Chelspeed

If it worked then wouldn't they have been willing to spend a couple of hundred quid on a back to back dyno session? They haven't, they've just written some pseudo science mumbo jumbo, draw your own conclusion.

I'm no expert in combustion in an engine but do know that it's not the spark from the plug that ignites all the fuel molecules. The spark ignites the first few and the flame front moving through the combustion chamber that ignites the rest. As long as the spark is strong enough to light the first few, making the spark 10 times stronger won't make any difference. Then once the fire is lit it doesn't matter how many extra sparks come afterwards, they're not going to make the slightest difference the flames already burning. Its like trying to get more heat out of a bonfire that's blazing away by lighting another match and throwing it on.

marmski

Well i was unsure about its claims too... seemed a little extreme, but not knowing an awful lot about combustion (except what i have read) i was unsure of whether it would live up to its claims.

The rookie

iTrader: (1)

I don't know of any coil with a dwell time short enough that it would be capable of firing again in a short enough time to be any use, shortest dwell time I know is the latest Bosch coils at 2.2ms, at 6000rpm thats still 90 crank degrees later and meaningless.....and if you run that coil on a more normal dwell time of circa 5 seconds it burns out, also the 9amp current is too much for an EMS designed around lower current coils!

Simon

Simon

marmski

I dont have a clue what you just said... but it sounds like their theory is flawed then?

gt5500

Put it this way I think he just ripped up their theory, chewed it up and spat it in their face I hate all these scamming companies that sell rubbish off the back of some mumbo jumbo scientific super dooper theory. They are just preying on the naive. Like chelspeed said the spark only starts the burn it can't do a better job then it does.

Crosstalk

LOL, nice analogy!!!

Andy.F

Would you prefer to light the bonfire with a damp match or a flamethrower though

MSD

jasonius

iTrader: (1)

^^^^

Andy, how important is a good spark in a scoob..?

For example, could a poor/low battery potentially effect performance..?

Andy.F

The battery condition should only be an issue for starting, after that it will be the alternator setting the voltage.

If you have ever had a 92-96 car with old cracked coil packs you will realise what influence the quality of spark has ! Yes it is critical to have a good strong spark for best performance. With poor ignition you are losing power way before you feel or hear it as a misfire.

I have a MSD ignition system on the race car and I can tell you that before something weighing in at a hefty 3lbs gets bolted to that car, it has to prove to me that its definitely required !

frayz

iTrader: (7)

Do MSD make coils/ign enhancers for the newage cars that will run with the OE ECU?

I have MSD total loss on my jetski engine... awesome bit of kit