what kind of spark plug should i run

[dustinh_TA]

what kind of spark plug should i run and maybe wires i currently have basicly no mods (borla catback, air lid) but i will with time

[Loudz28]

ngk tr55s

[Johns00Z28]

+1 on the NGK TR55s

[Eagle]

Autolites. PN: AR103

[Weston_24]

Do a search and you will find a ton on this subject...you will find most prefer NGK TR55s or TR6s if your gonna spray..I run MSD wires

[Eagle]

You'll also find that those who have burned a set of NGKs use Autolites for their next set! AR93's for spray, AR104's for stock.

GL & HTH,
-Eagle

[N20LT4]

I'd have to say NGK's all the way. I've used everything from Champion, Autolite, NGK, etc. and I must say I am most impressed with the NGK's, although it's not like Auto Lite's are bad plugs - they're not. I use NGK TR6's in mine!

[mark21742]

im running the autolite AR103's and like them, but lots have good luck with the ngk's TR55's and TR6's

[Fred H.]

I am looking at replacing the stock Delco Iridiums and changing to a NGK Iridium. According to NGK the stock replacement is a TR5IX, yet everyone (including the WS6 store) is reccomending a TR55. Anybody know what the difference is and why folks recommend the TR55 over the TR5IX?

Keep in mind these are going in a totally stock WS6.

[UTVols98]

ngk tr55s

+4,5,eh whatever. If all these people are running them it can't be wrong.

[Mr. Luos]

Just put TR55's in mine.

[sunsetorangess]

Been running the tr55's with spray for sometime.
No issues.
J

[Y2KPewterSS]

TR55s here for several years with no issues either.

[slikws6]

I saw Horsepower TV do a plug comparison test and these E3's suprised me.


The E3 generated an average of 5.8 more horsepower while using 3.9% less fuel.

[OnEbAdReDSS]

I watched that same thing... but 5 hp ain't much... its to the flywheel remember that..

[Mr. Luos]

but 5 hp ain't much...

Depends on who you ask.
I was pissed at my car for being down 3RWHP last time I dyno'd.


Just put TR55's in a friend's 2002 Z06.

[Fury_786]

+2 for TR6's

[99w69kitt]

tr6's no problem

[punisherTA]

I went from the stock plugs, to the NGK TR55's and actually didn't like them as much. Soon after I jumped on the NGK Iridium TR55IX bandwagon and was much happier with the results and seat of the pants feel in part, low and wide open throttle situations.

I recently had Livernois port and polish a set of LS6 heads and threw a set of comp cams, LS6 intake, BBK T.B. and a few other goodies and thought it might be a good idea to get a slightly colder plug to be on the safe side of things since I was seeing close to 400rwhp through my auto.

I looked around and found a local company called WeaponX and the owner said he would change all 8 for free as long as I bought his plugs. He said that they were the plugs to use and I thought, smokin deal as I know how brutal it is to change a couple of them so I figured I'd give their spark plugs a shot. (Yes, I made sure he changed all 8)

I can't recommend their plugs enough. I would have never thought that spark plugs could make that much of a before and after difference, especially since I already had NGK iridiums in the car that were performing better then the TR55's. I believe the model name of the spark plug was K6CF, but don't quote me on that. Apparently WeaponX is well known in the Mustang community.

[Mr. Luos]

You shouldn't feel any performance difference from the TR55 to the iridium TR55. The difference is in how long they last.
Of course...that is if both sets were gapped properly.