Br7 ???

[mcafferty]

There are these:
BR7EF
Part/stock # 3346
http://www.ngk.com/results_cross.asp?pid=Br7EF&x=0&y=0
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and then there are these:
BR7EFS
Part/stock # 1094
http://www.ngk.com/results_cross.asp?pid=Br7EFs&x=59&y=17

People seem to be talking about them as if they are the same plug. which one is the correct one?

 

[Scuba-Matt]

The BR7EF is V Powered. It has a grove in the electrode and tip
The BR7EFS has a normal flat electrode and tip

 

[mcafferty]

any benefit to one over the other?

 

[Scuba-Matt]

The V Powered is suppose to give a better spark. The TR6 plugs are V Powered

 

[Fade 2 Black]

The BR7EF is the one we use. For your power level and probable amount of boost the TR6 (#4177) is best, the BR7's would be too cold unless you're running 18+ pounds of boost.

 

[mcafferty]

I am having a hard time with this one. my tuner said i should use the BR7EFS plugs but i have heard a lot of diff things out there about idle, etc. The truck is my DD in the spring, summer and fall. I respect my tuners and his knowledge. I have not had any problem with the TR6 that i have in there now and the only change will be the long tube headers (no cats) witch should drop .5-1 lb of boost from what i hear. any advise would be great.

 

[ecoastkid]

Listen to Fade...you dont need that cold of a plug with your setup.

 

[qk01lightning]

+2 on what fade said. i have used both and like 90% of us will tell you the tr6 has a lot smoother idle than the br7. but it is your truck so do what makes you comfortable. good luck either way you go.

 

[mcafferty]

is the idle the only down fall to running a cooler plug? any downfall in performance? I want to thank all of you for your info.

 

[LightningClint]

Go with the TR6

 

[mcafferty]

thanks for the info guys but what are the down falls for a cooler plug? foul out easy?