Edge here is some info I was able to come up with yesterday:

Ford says our motor calls for a SP-527 plug, that cross references to denso ITV22 equivalent. So that would be why Ford Racing lists the ITV24 as a colder plug (1 step colder).

So with that being said the NGK LRT7IX-11 is a equivalent to the ITV22 or the Motocraft SP-527 plug that is stock heat range for our car. So that is one step colder for the Mazda's but factory heat range for us. The only colder plug I have been able to cross reference to so far as being colder is the ITV24.

 

Thanks for the info!! Where does Ford say this? Do you have a link? We were going off the part number on the plug that we took out of our car and cross referenced it with NGK (it is an NGK plug). According to NGK the LRT7IX is a step colder option from the factory LRT6DI.

Here is the NGK Part number break down chart.

 

I see it and I never doubted you, but your last question is what I was assuming happened. So I wonder if there is a mix and match of plugs at the moment, the LTR6DI-8 being the original designed plug and then they switched over to the motocraft SP-527? Because if you took your car in for a tune up according to the parts department the motocraft SP-527 is what they would put in my car. And that would make sense being that Ford racing calibration package includes a set of Denso ITV24's, those would be a bit much and most likely foul out if they were 2 step colder plug on just a calibration flash tune/bolt-on's, etc.

Call up your local parts department and see what they reference you to for a replacement spark plug per your vin number.

 

I did call them. They gave me the SP-527 same as you. How did you cross reference that plug? I've been trying to use sparkplug-crossreference.com with no luck. Says no match when I use both the SP-527 and the Autolite XP5363 (which I did find to be equivalent to the Motorcraft SP-527). Have you taken out your plugs yet?

 

It would be interesting to see when the change over happened. What's the build date of Edge's car and loco's?

 

I see where it says matching plugs on ebay and gives the ITV22, but I'm not sure that I trust ebay. The ITV22 will definitely work with the car but I don't think it is the same heat range. I guess the next step will be to investigate and see if the plugs have changed somewhere along the line.

Also, do you know if that Ford Racing package you showed above lists those ITV24's as one step colder than stock or if it is only listing them as an upgrade for a spicier tune? Because Ford may be using 2 step colder plugs on purpose.

By the way this discussion is great and I'm glad you brought this to my attention as we want to make sure and provide accurate information and discussion is good for figuring things like this out

 

Well after I found out the plug information I saw that pic and then it made sense why Ford Racing would use a IVT24 plug on a calibration tune. I would have to say that plug is 1 step colder based on the cross reference from what the parts department plug replacement is saying and believe our stock heat range plug is the IVT22 or equivalent. I have never seen a dealer offer a 1 step colder plug as an oem spec replacement or suggestion for a plug, so them stating the SP-527 is what our motor calls for is why I believe the IVT22/LRT7IX-11 is factory heat range. But as far as Ford Racing offering the IVT24 plug for a calibration flash, even if it is very spicy (ragged edge of pump) our stock turbo/max boost level/full bolt on's wouldn't require a 2 step plug and if you tried running a set they would foul out. I can see the IVT24's being the 1 step colder plug and will run well with a calibration tune, bolt on's (but not needed until IVT22's or equals are running too hot). But for a bigger turbo upgrade, more flow, more pressure will increase combustion temps and I always run 1 step colder when upgrading from a stock turbo setup. But yes I am glad this came up and we are able to grasp some knowledge around our plugs because I didn't want to run stock plugs on my new setup. So now we will have to see what plugs everyone has lol and if a change was made.

 

I have an early 13 and will try to pull a plug this weekend to see what it has stock. I would trust what's in the motor over a parts counter guy. Someone with a 14 or late 13 needs to pull a plug.

 

I have an early 13 and will try to pull a plug this weekend to see what it has stock. I would trust what's in the motor over a parts counter guy. Someone with a 14 or late 13 needs to pull a plug.

A parts counter guy is just going to go off of what the system is telling him, it's not like he is taking a guess off the top of his head. So the parts system is showing our car should be running a 1 step colder plug then what people are currently pulling makes no sense.

 

We picked up ours in February. I know they were being produced in 2012 for 2013 but I'm not sure if it would be considered early 2013 or a middle 2013. Need to see if I can find a build date.

 

I took delivery in 11-26-12.

 

Just pulled mine out of my car....LTR6DI-8

I was going off the ford racing plug too...If it should be the IVT22 grab my order before it goes out the door today and swap them out please...

my car was bought in june this year.

 

They actually shipped out yesterday. Once we figure this out, if need be, we can exchange them for you (no processing/restocking fees or anything).

 

Thanks man.

I will keep digging too. I know a good rule of thumb is go down a level for every 75-100 HP added. so if they are two steps colder I will just have to shoot for 500HP.

KIDDING. I will let you guys know what I find out!

this is why the forum is GOLD

 

so some cars might have a 1 step hotter plug than ford recommends. that is scary

 

According to Denso, the ITV22 is a step colder than the stock LTR6 plugs

LTR6 = ITV20
LTR7 = ITV22

 

According to Denso, the ITV22 is a step colder than the stock LTR6 plugs
LTR6 = ITV20
LTR7 = ITV22

Thanks for the pic info, but we already knew that and that is what we are trying to figure out. Is why people are pulling a ngk plug that is 1 step hotter and differant brand then what the Ford parts system is saying should be in our car (oem spec).

 

The part number for the MS3 factory plug is ILTR6A-8G. Again with the 6 indicating heat range and why they run ITV22/LTR7's as one step colder. Anybody with a 2014 want to pull out a spark plug and see what it says?

 

has anyone pulled an LTR7 out of a car yet? I have a feeling ford just has is F@#*ed up in the parts system.....

seems like LTR6 is the correct plug since that is what is in all of our cars from the factory... making ITV22 be a step colder...

 

But then why would Ford Racing offer a 2 step colder plug for a calibration tune (way overkill and plugs would foul out quick causing misfires), that is why I am thinking if anything Ford made a change and as long as there are no issues brought up then they aren't pulling the NGK's to replace them with the new plug reference. But if you were to take your car in for a tune up today, I bet if you pulled the plug it would be a SP-527 plug.

 

maybe the guy making the SEMA display board put 24's on it cause all the 22's they had were in test cars, LOL.. we are putting alot of faith in a display that may not even be exactly whats included in the upgrade.

 

I would have to agree!

from all this data I think that the 22 is a step colder.

I will send you back the 24's when they get here next week and swap them out. Thanks EDGE.

 

I like this thread. When we figure out which plugs to go with, I will order some.

Subscribed.

 

Im gonna need a good set of spark plugs bc of my 7670 efr im putting on in spring

 

I can't wait to follow this build... Do you have a build thread where you are detailing everything?

 

The ST owners guide supplement calls for the CFYS12Y2 spark plug, which cross references to an Autolite XP5363, and on the autolite cross reference is also the Motorcraft SP-527 as specified in the Ford part's system as being the o.e. replacement heat range for the ST which is by all accounts one range colder than you're seeming to find in your engines when you have pulled them.

Why would the manual specify something that isn't actually on the car? (Like the twin plate clutch, and other misnomers in the guide).

Competitor Cross Reference
Competitor Name Competitor Part
AC-DELCO 41-115
AC-DELCO 41-116
AC-DELCO 41-125
AC-DELCO 41-126
BOSCH 9616
BOSCH HR7N1133X
BOSCH HR7N1332
MOTORCRAFT AYFS32YR-9
MOTORCRAFT CYFS-12F-5
MOTORCRAFT CYFS12FP
MOTORCRAFT CYFS12Y
MOTORCRAFT CYFS12Y1
MOTORCRAFT CYFS-12Y-2
MOTORCRAFT CYFS-12-YEC
MOTORCRAFT CYFS12YPC
MOTORCRAFT CYSFS12YP
MOTORCRAFT SP-519
MOTORCRAFT SP-520
MOTORCRAFT SP-522
MOTORCRAFT SP-525
MOTORCRAFT SP-526
MOTORCRAFT SP-527
MOTORCRAFT SP-535
MOTORCRAFT SP-537
NGK ILTR5A-13G
NGK ILTR5K13
NGK ILTR6G8G
NGK LTR6A113

http://www.autolitecatalog.com/PartDetailWindow.aspx?b=A&pn=XP5363

 

No tr3 performance is gonna create one soon tho. I have posted pics of my build on the vendors section on tr3... Check it out and reply if u want or pm.. I honestly cant wait and ik i mention it alot but im only 23 yrs old and im anxious bout it.. I want the best and i want it done right

 

So I'm wondering if they put the wrong plugs in our cars because of a shortage?

Sent from my Galaxy S3.

 

I doubt the wrong plugs are in the cars... Its more likely that the Autolite and Motocraft plugs are not one step colder and than stock.

 

Could it be that the "old" plugs are euro spec that got installed in all our motors since they were built in Valencia for a while until Ford spec'd different ones for the US?

 

I am going to try out the ITV24 plugs, just going with my gut on this one. Worse case scenario they are too cold and foul out, Edge if we really have the stock heat range of the plugs you pulled then it's another misguided information from the manual, etc. But I wonder if ATP, TR3, Kmac have even changed to different plugs? No posts about eating plugs, so if we all have the ngk's then there hasn't been any issues running them so far up to the fuel limit of the stock setup. So I don't think we can go wrong with either the ITV22 (or ngk equal) or the ITV24. The only thing I don't like about the ngk's is they are gapped to .44 the ITV22-24 are gapped to .30-.32 almost factory spec. To gap down the ngk's to .30 is a lot and irridiums aren't really made to gap so to speak, or if you do you have to be really careful. Because the tip is very fragile since there isn't much material there.

 

Keep in mind that Ford will install whatever plug will achive the lowest emissions possible. In this case I would suspect the hottest plug it can handle with the most efficient burn. Im out of town at the moment and have no way of finding out. Being the plugs are iridium, I dont think even 2 steps colder would foul. Just my opinion. I did order a set of the denso 24's and will run them during my tuning session.

Just asking, has anyone fouled a modern iridium or platinum plug? Its been my experience that they are pretty resistant to loading up. The newer ignition systems are pretty stout.

Keith

 

Thanks skizzo81, we'll look forward to some of the results from your thread.

http://www.focusst.org/forum/focus-st-performance/13551-full-test-colder-plugs-pictures-i-am-testing-so-you-don-t-need.html

 

Someone mentioned the same sort of thing earlier but after a couple different conversations with NGK on the phone today, we got 2 different versions of the max +/- you should gap any given plug to, one answer was +/-8 and one was +/- 12. With that said, you would have to gap the NGK LTR7IX-11 to the absolute maximum just to get to stock gap level. We've actually had to run as much as 0.024"-0.026" on the Mazdaspeed motors that are running big turbos with high boost to avoid spark blowout so I think we'll be a little more comfortable sticking with the Densos for right now. I still won't rule out using the NGKs because we've had TONS of success with them in the Mazdaspeeds but by principle alone, I think the Densos are probably the best bet for brand to use for colder plugs at this point.

 

see my spark plug thread. I just ordered both sets from you. I will be testing to see if the 24's work or if they foul out fast. read it and lemme know.

 

Ford CFYS12Y2 also labeled LTR6DI-8 plugs in mine. 11-26-12 delivery date.

 

Same here build date of 5/13/13. Car's a late 13 not 14 however.