Because the splitfire plugs were for the V8s in domestic cars, I thought you had some knowledge on scions? Look all I am saying is if you didn't try them out for your self than you can't say anything. This isn't that dam thing on ebay for 29.99 that promises 20HP, sh*t even I didn't say it was a 20hp add on. All I am saying is that there is a difference in power and responce. Never said how much, just that the car feels better. explain that one to me and why the car still feels better to this day.

 

I'm not taking sides, but some of the "it feels better to me" comments can be a psudo thing. You know you've changed them and it had to make some difference. I would like to see some dyno results or some other kind of testing. Yes, there are better plugs. The factory plugs are a comprimise, as are many things in the automotive world. Any thing can be improved.

When I was in school a teacher once gave me a quick explanation of your normal ign system. Take one lighter and quickly wave it under a piece of paper. Did it catch on fire? No. Now, take two lighters and hold them together. Quickly wave them under the same paper. Did it catch on fire now? No. It takes time to light the fire. Changing one element slightly is not very likely to make any difference.

 

Stylis, the exhaust fumes must be getting to you. Splitfire plugs were made for most all cars, trucks and motorcycles. They are snake oil and didn't do ____. And Hongs66, what is exactly compromised in the factory plug? Name me one plug that would be "better". Folks the bull____ flag is flying high in all its glory. And Stylis, I have all the Scion knowledge allowed by law in 48 states, and you are "exhausting" me.

 

always nice to see the people who talk ____ have no profile. And also nice to see that you don't wanna pull your head out of your ___ with your flag to try out the plugs yourself. I am not here to sell people bum products either, I am here to help share the knowledge of what they can do. I am not pushin anyone to buy them. You want to buy it go for it, you don't fine. I am just saying that they do work and if you don't want to believe me fine.

 

Please take this to PM, or email. I'm sure others don't want to see what has been posted and what will be posted.

If someone has a dynosheet to prove, then fine. If someone is giving their first hand experience, then fine. But if you're trying to prove something, let's see the dyno sheet.

I will say this, when I used to road race motorcycles when I was in AFM, I changed out my plugs to splitfires, and the response was better. But then again, that was 10+ years ago, and maybe my skills just happen to improve everytime I was on the track.

 

Scott... All things in the automotive world are a compromise. In the suspension world they give up some performance for a softer ride. Most of us change the springs to get the better handling and give up a little softness. I'm sure that the spark plug is no different. It's designed to light the fuel and disapate heat. Changing the material or design will make diferences. Like I said show me a dino sheet and I will believe. Until then I will stick with factory plugs.

 

I'm sorry I didn't have time to write a profile, but I wasn't trying to date, just talk about cars. Anyway, I'm tall with brown hair, a leo, like long walks in the park, nd work as a Master Diagnostic Technician for Toyota. I'm married so we can't really date, but thanks anyway. As for the plugs, I am still waiting for some conclusive proof of these HP and response claims other than the seat of YOUR pants. I have worked on cars, motorcycles, and airplanes for many years and personally have never seen these 'hyped" HP claims amount to ____. Magnets on the fuel line, Slick 50, Splitfires...........I'll save my money for worthwhile things. By the way, exactly which spark plugs are the ones I should pull my head out of my ___ and try? I think if your head was out you would have realized that the stock plugs are neither platinum or irridium, but conventional plugs. Or didn't you notice that when you put the super duper plugs in?

 

haha...you can lead a horse to water, but you can't make em change their snake oil plugs...these guys should go to the track and watch fast cars...then see what they're using.

 

I'm sorry, but after reading all of this. I have to say a few things. For a "Master Diagnostic Technician for Toyota" you should know that, large multiple miss fires will be logged by the ECM along with a "lean" or "Excessive" fuel code, but a small pop from air being sucked in the exhaust while either revving or between shifts would go un noticed by any ECM.

Now, to the fun part. Lets take our OBD II system. This system takes constant readings of fuel/air/spark/timing/ and all of that other neat stuff and adjust as needed on the fly. This only gets better and faster in a OBD III system (Which I believe out cars is!!)! Now, I'm not going to say that replacing the plugs with the highend plugs is going to give you great gas milage or some un-godly amount of HP gain. The fact is, that is impossible! BUT, they can help to give small improvements to the ingintion system with a plug that fires faster, and has a more constant spark. That is why they had the "Splitfire"' plugs. They improved spark, which in theory should improve performance. Same goes with the plugs here. They flow the voltage/amperage better then the stock "Conventional" plugs. Thus giving some improvements. I myself notice better throttle response, smoother idle and a little better gas milage.

And all of this from and old school Mechanic that builds "Hot Rods" for fun. I'm all about horse power and performance. The topic here is basic auto mechanics, something taught in HIGHSCHOOL Autoshop!

Thanks for you time
Tim

AKA EvilScion

P.S.

I'm not an english major. I'm a wrench. So, please excuse the spelling.

 

How much do these splitfires cost?

 

You don't want the Splitfires. They did have some problems like over heating. But they were average of about $20 a plug.

 

DAM Scott17 GOT OWNED!!!

 

If you had a point it escapes me. I do know that a random misfire(P0300) code rarely would ever set a lean or rich code because misfire is within the normal envolope of fuel trim capabilities. I also know that an exhaust leak upstream of #2 O2 sensor can set a P0171 lean code by introducing more oxygen into the exhaust. I also know that with a real time data list you can monitor each cylinder individually for ANY occurance of misfire ( as in a SINGLE missfire). What I was talking about was aftermarket plugs and people who are convinced they are some how "better" than the stock plug. I call bull____. Some will definately last longer at a correspondingly higher price, but none will perform better. Show me the proof or stifle yourself. I don't know where you come from but Splitfire plugs averaged about $6 each. As for a plug firing "faster" give me a break, go back to high school and study some physics. A plug with more resistance will actually fire hotter from longer coil saturation at the expense of more heat build up and therefore shorter service life of the coil. But hell, what do I know, Toyota engineers could always use the help of "the muffler man" and Joe" hot-rodder" when they design ignition systems. You guys should really pursue that!

 

So if these splitfire plugs cost $6ea & you need 4 thats $24. So you might be lucky & gain 1%hp if you have the gap set just right. So $24 for maybe 1hp. Seems ok but Im a cheap person so I would just stick with stock. I could just drop 20Lbs from the car & gain the Equivalence of 1hp plus get the addition of a little better handling. Just my IMO though.

 

Wow, that is one big chip on your sholders! I think you need to chill some and look at reality for a little bit. No one here has said that there is going to be some massive improvement. All that has been stated is a possiblity of a few things. But, since your obviously soooo much better then the rest of us that build real cars, and I might had, not just hot rods, but pro-drag funny cars and such. Not, to mention the fact of a proven race career since the age of 18. I might be just a simple wrench, but I do know better then to look and try something before I put it down. Because if it wasn't for that I wouldn't have become the good mechanic that I am today!

So, take the chip off and give it a chance. Then comment. Nothing is better then proving something yourself!

 

No chip here whatsoever. I am just very curious as to exactly which plug you tried in your Scion that resulted in an improvement. I have never gotten an answer to that question. I would love to try it for myself. I only question your knowledge when you make statements such as: Do you have any factual proof whatsoever that Splitfire plugs "improved spark", "flow the voltage/amperage better than stock.. thus giving some improvements"? I would love to see any info you can give me on this matter so I can get up to speed in the spark plug world. I'll let you get back to building those "real" cars and I'll get back to working on all these fake Toyotas. Keep me posted.~~~~~~~~~~~~scott

 

I guess the tech forgot to read the topic. We are talking about the NGK iridium plugs helping us out, but you want factual proof which at this point still won't shut you up. So as far as I know you could just be some guy trying to enrage us and look like a fool on scionlife. If you don't want to take the word of the scionlife peeps that this spark plug works than, say your peace and stop posting or else don't say anything at all.
Everyone on the boards now see you as d*ck because your just insulting people and not putting an end to it. I already stated that if people want to try it they can, if they don't than that is their loss.

 

At this point I have to agree with Stylis. I don't think that there will be anything that can be said to shut you up or keep you on topic, unless someone installed a set of NGK iridium plugs in your Scion to prove it to you. And since your obviously not willing to experiment and try them yourself, because Toyota make the perfect car. There isn't any point in this conversation to go on with you.

 

Ok guys. Some of us want real numbers. I found some dyno charts for iridium denso website. If you disagree, you should argue this issue with the company and enlighten us in the forum also.

http://www.densoiridium.com/tunerstales.php

 

Yeah, those HP figures measured at the brochure are quite impressive indeed! Do you remember all the "factual" evidence that Splitfire provided us that "proved" that Splitfire plugs were the best thing since sliced bread? Why aren't you running those? I didn't notice any of the parameters of that dyno info listed. Was it a back to back run with the only difference being a change from new stock plugs to new irridium plugs? What is the standard deviation of the dyno used? I really don't feel the need to argue the point with Densos advertizing department because I truly believe they would not care. Here's what i do know though: In 1998 Toyota introduced irridium plugs in the newly-redesigned Land Cruiser with the 2UZ motor. Toyota informed us that the only benifit was longer service life. If more power was an added benifit, don't you think automakers would be sure to stress that point in their advertising? Why did no automakers supply their cars with Splitfire plugs as stock equipment? I think with all that available horsepower there for free they would have jumped on it! The latest and greatest plug is just that. In a Scion engine, normally aspirated, no plug is going to show any performance gain over the stock plug. I suggest a test for all the nay-sayers: go somewhere and drive your car, then don't look as your buddy changes your plugs out (or does he?) and drive it again. Feel the difference?