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Discussion starter · #401 ·
We are just happy to help you guys enjoy your experience with your car!

With the stock plugs I was getting some KR so I switched to the 1 step colder ngks. Still getting pretty much the same amount of timing pulled. Damn crappy cali gas. I tried all the top tier gas stations in my area and they were all pretty much the same results. Wonder if 2 step colder plugs will helped.
You have an octane problem. The colder plugs are not going to help with that. You could run water/meth injection to give yourself an octane boost. That or an e85 mix if you have access. Cali 91oct gas is a joke :/
 
We are just happy to help you guys enjoy your experience with your car!



You have an octane problem. The colder plugs are not going to help with that. You could run water/meth injection to give yourself an octane boost. That or an e85 mix if you have access. Cali 91oct gas is a joke :/
Pulling out the amount of timing that is in the tune in the areas it is pulling will work wonders as well, 1 step colder is max I would go PacDawg.
 
So I installed the ITV22's tonight. I came across a thread that showed the Ford shop manual called for 8 ft-lb of torque when tightening the plugs. I did this using a torque wrench; and strange question, but is it supposed to feel like its not super tight? It was maybe another 1/4 of a turn and the wrench "clicked".
 
So I installed the ITV22's tonight. I came across a thread that showed the Ford shop manual called for 8 ft-lb of torque when tightening the plugs. I did this using a torque wrench; and strange question, but is it supposed to feel like its not super tight? It was maybe another 1/4 of a turn and the wrench "clicked".
Spark plugs shouldn't be super tight. Just tight.

siht daer nac uoy fi revo em lloR
 
been doing plugs for many years, tension should be firm (in lieu of a tension wrench), that is my guide. It will always feel like more effort to break the seal than firmly seat.
 
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Since there has been so much discussion about the effect of plugs on KR, currently running a tune that is too aggressive for the fuel and I am getting consistent timing being pulled. Just swapped in NGK 1 step colder gapped at 0.026 - thanks Edge! - (same as I had regapped the OEMs to) to verify differences in knock resistance.
 
yes. I will pull the plugs in about 4k miles and make my 3rd and final sparkplug comparison video.
I had the itv24 in now for about 200 miles.
The engine feels and sounds smoother , more "rev " happy.
Idle is spot on and feels no different then the stock plugs.
the overall feel and sound is better.
I have 6200 miles on the car so you get a feel for the sounds, vibrations, and know when something seems out of sync.
 
I had a great ordering experience with Edge Auto Sport as well when getting spark plugs. Very informative and easy to do work with through email or PM.
Just got my gear delivered from Edge too. Including some itv22 :)

Great response and shipping time even for free shipping. Ordered Tues morn. Got them Friday.

Thanks guys!
Image


Having the plugs installed tomorrow. 1850 miles. Running Randys 93 tune.


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Since there has been so much discussion about the effect of plugs on KR, currently running a tune that is too aggressive for the fuel and I am getting consistent timing being pulled. Just swapped in NGK 1 step colder gapped at 0.026 - thanks Edge! - (same as I had regapped the OEMs to) to verify differences in knock resistance.
Same level of ignition correction happened with the step colder plugs. Like I was mentioning earlier colder plugs prevent pre-ignition which is actually silent (not picked up by knock sensor) and more dangerous than detonation if it occurs.
 
We are a lot that saw a difference on the AP after colder plugs installation.

EDIT : http://www.focusst.org/forum/focus-st-performance/18665-colder-spark-plugs-ignition-correction.html
I am afraid what is happening is that a lot of people are not keeping all the variables the same. Were the temperatures the same? Was the car running the same fuel? Was it heatsoaked the same way? Were multiple runs taken? Finally were all the parts the same. You mentioned in the first post of that thread that you installed the CAI from FRPP at the same time.

I am not saying a step colder plug is a bad idea. It certainly is as the power levels are increased. However from my testing and when I've talked to several others to do back to back testing in a controlled fashion, it turned out that in terms of knock, the spark plugs were not a factor.
 
I am afraid what is happening is that a lot of people are not keeping all the variables the same. Were the temperatures the same? Was the car running the same fuel? Was it heatsoaked the same way? Were multiple runs taken? Finally were all the parts the same. You mentioned in the first post of that thread that you installed the CAI from FRPP at the same time.

I am not saying a step colder plug is a bad idea. It certainly is as the power levels are increased. However from my testing and when I've talked to several others to do back to back testing in a controlled fashion, it turned out that in terms of knock, the spark plugs were not a factor.
Alright, but like I told you and many of us tested. The car was pulling timing for some months, and then boom, no more timing pulled after colder plugs. Not everything needs to be scientific. And for the FRPP intake, some people like Silver Shooter saw the same results as me. No timing pulled after colder plugs. Maybe your tune is really too agressive?
 
Alright, but like I told you and many of us tested. The car was pulling timing for some months, and then boom, no more timing pulled after colder plugs. Not everything needs to be scientific. And for the FRPP intake, some people like Silver Shooter saw the same results as me. No timing pulled after colder plugs. Maybe your tune is really too agressive?
Ask Silver Shooter again about this. Once he turned up his tune and put the OEM spark plugs back in he saw no change. This is called an A-B-A test where you test the base condition a second time. And if you want to arrive at the correct results - yes, a scientific and consistent approach is what you need.
 
I saw ZERO difference from one set of plugs to the other, I think like Alex is saying is that the testing conditions arnt the same between stock and colder plugs..

The colder plugs are not a bad idea in anyway but also not a way to fix KR, UNLESS your oem plugs were fouled or not performing well


2013 TS3 RANDY tuned
 
Ask Silver Shooter again about this. Once he turned up his tune and put the OEM spark plugs back in he saw no change. This is called an A-B-A test where you test the base condition a second time. And if you want to arrive at the correct results - yes, a scientific and consistent approach is what you need.
Well, you are the tuner and i'm here to learn. I wonder why FRPP recommends colder plugs with their tunes as well....?
 
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