OK, currently on my 6th tank of gas on these plugs, so far I'm holding a 29.6 MPG average where my average before (in sub zero weather) has been around 26MPG.

Interesting note is really in regards to driving the car "nice" and driving the car "hard". While the highway or "nice" economy hasn't really benefited tremendously, I notice that the overall fuel economy of HARD driving has shot up significantly, to the point where there is really only about a 1 to 1.5 MPG average between the two driving styles.

That was also with about 8k miles since the last oil change. So it will be interesting to see how I do now that I just changed the oil a few days ago and topped off the tank.

Jorge (RiftsWRX)
ProjectWRX -A Subaru WRX enthusiast site

 

I"M SO CONFUSED!!!

I'm a mechanic in BC. I've been in the trade for 6 years now. 1/2 of the pulse plug theory makes sens, 1/2 doesn't. What i'm wondering is this:

If your fuel mixture take 10,000 volts to ignite. You're computer will make yoru irridium spark plugs spark at 10,000 volts. If fuel mixture leans out, it will raise the voltage. The ECM will only use the necessary voltage to ignite the fuel mixture. THe voltage is regulated by the ECM.

now, for the pulse plug, it's firing at...1,000,000 volts? WHY? if it only take 10,000 volts why the over kill.


Here's my theory. Spark plug resistance is "regulated" by the ECM. If it says 10,000 volts, it's 10,000 volts. If you all of a sudden go rich, and only need 8,000 Volts, teh ECM "lowers" the spark plug resistance so that it fires at 8,000 volts. I'm guessing that the pulse plugs have INTERNALLY controlled resistances. Meaning, instead of the ECM saying "fire at 10,000 volts" the Pulse Plugs have a high resistance internally and regulates that the plugs only fires at 50,000 volts. stronger spark, more power. My theory can easily be tested too. for those with pulse plugs installed, dyno and do MPG runs. Now, take the pulse plugs out and install regular plugs with HIGH resistance values. Run the dyno and do the SAME MPG runs.


Does my theory make sense?

 

Hey guys,

I'm the silly guy who spent money on Pulstar and am now driving around with them in my GE8 Fit. The stock plugs taken out were Iridiums, but I bought the Pulstar so...

Perhaps its because of where I am located. When weather is hot and very when it is humid too, i get unstable idling and also likely misfiring when cruising at 3500 rpm. It it also likely misfiring when accelerating hard at higher revs. I've tried 3 types of premium petrol and none cures this.

I say likely misfiring because its a squeaky/whistle "szzt" sound from the engine, and a momentary drop in the engine's pull when accelerating. Or I'm thinking it totally failed to light the fuel air mixture, and when the piston moved down without ignition (due to momentum) it sucked in air creating the sound I mentioned.

I think the timing or ignition is affected by the plug's faster burn, creating a sort of advance in timing?

Really not pleased with it and power seems down from before.

Can this be corrected if I get a piggyback and tune the ignition? What are the available choices out there?

If not, I'm taking these pulse plugs out and fitting back the original.