[Unfitproduct]

I just saw your and looked em up.
Denso's. not a bad price

 

[sehenry29]

I guess I'm not the only one getting some timing pulled with tune when I get on it. I was using 93 fswerks tune and I am now on 91 fswerks tune. I still get -.5 to -1 pulled but less often. I was starting to think my engine was a factory dud. I will have to try one step colder.

 

[suss6052]

http://www.focusst.org/forum/focus-st-performance/16355-frpp-cold-spark-plug-set-2-0l-turbo.html

Ford is recommending two heat ranges colder for their as yet to be released calibration upgrade.

Mind you they aren't replacing the charge air cooler though, and this two ranges colder plug should help to reduce the exhaust gas temperatures.

 

[Burnboy]

Just a lil addition, I've seen audis come with two different brand plugs in the same engine same cars while still new cars.

 

[Kent]

I guess I'm not the only one getting some timing pulled with tune when I get on it. I was using 93 fswerks tune and I am now on 91 fswerks tune. I still get -.5 to -1 pulled but less often. I was starting to think my engine was a factory dud. I will have to try one step colder.

I read somewhere that tuners consider safe -0.5 to -1.0 of timing being pulled. I might be wrong though. I will try one step colder too when the winter is over.

 

[hemiCouple@Stratified]

I suspect the plug change is simply to keep cat temps down, this is Ford racing we are talking about they have different concerns than other aftermarket tuner

 

[PacDawg]

FYI, O'reilly Auto Parts sells the NGKs for 8.99 each.

 

[66sprint6]

NGKs are what I run in everything else I own so Ill be looking at them if I feel the need to change em out!

Matt

 

[EdgeAutosport.com]

We have both NGK's for $35 (set of four) and Denso's for $38 (set of four) in stock if you can't find them locally. And yes, we do have another set of the ever elusive Denso's on the way

 

[Whiteblurrvt]

Im going with the ngk 1 step colder and tr3 is as well so itll be tuned correctly

 

[Unreal]

I suspect the plug change is simply to keep cat temps down, this is Ford racing we are talking about they have different concerns than other aftermarket tuner

First a disclaimer that I'm no expert on the subject of spark plugs. With that said, colder plugs will likely have negligible to zero effect on exhaust/cat temps. If the plug itself gets too hot, it can cause detonation, which is basically a second explosion when the piston is traveling down and happens when previously unburned fuel in the cylinder is ignited by the hot plug. Of course, detonation is bad for your engine and should be avoided. If the plug gets super hot, you can run into pre-ignition which is far worse and can be fatal to your engine almost immediately. Pre-ignition happens during compression when the piston is traveling up and the fuel ignites from the super hot plug before it has a chance to spark. This pre-ignition tries to force the piston down but it is still on the upstroke. Colder plugs means just that. The plug is colder to help avoid detonation and pre-ignition, but does not affect exhaust or cat temperatures.

 

[Whiteblurrvt]

I should be fine with the ngk plugs right with my setup once installed?

Cant wait!!!

 

[gringoloco]

I should be fine with the ngk plugs right with my setup once installed?

Cant wait!!!

Stock turbo, yep you will be good to go.

 

[ericwp]

What is the gap of ngk's ?

This one..

 

[Whiteblurrvt]

I mean with the 7670 kit

 

[gringoloco]

I mean with the 7670 kit

I know

 

[Whiteblurrvt]

U said stock turbo tho

 

[Chamber]

U said stock turbo tho

..... jesus.....

 

[Whiteblurrvt]

Stock turbo, yep you will be good to go.

This

 

[gottligm06]

He's saying ur small