Plugs for higher boost

[vladSVT]

Just wondering what is everyone running at high boost? (20psi +)


I am running BR7EFs, but since I gapped them down to .26 (from .28 due to blow out) recently my idle has been pretty shitty, and I have a huge misfire/pop at cold startup.

I've read some threads about TR6 being the best plug for E85 cars, since they are hotter then the 7s, and E85 doesn't really prefer colder plugs, since its harder to ignite/burn.

So I am thinking of switching to regular TR6s or should I go TR6 iridiums? Also what gap around .24 or so? (I am making 22psi)

 

[black-plasma]

TR6 @ .28, no issues on high boost and e85.

 

[Danno44]

TR6s at .22 22lbs of boost here.

 

[04sleeper]

Try some TR6's @ .026

 

[vladSVT]

Thanks fellas, will pick up some TR6s and try them out.

 

[triple-s]

Yup tr6 with 21 pounds here no problem.

 

[Senkak]

TR6s here also gapped at .028 21.5lbs making 733/682
Are your COPs original?

 

[sallen85]

Br7ef .02 gap


Sent from my SCH-R530U using Tapatalk 2

 

[vladSVT]

TR6s here also gapped at .028 21.5lbs making 733/682
Are your COPs original?

Yeah I have oem COPs.

Ill get a set of TR6 and slap them on and see how the car acts, if not Ill just go back to BR7s.

 

[Senkak]

Yeah I have oem COPs.

Ill get a set of TR6 and slap them on and see how the car acts, if not Ill just go back to BR7s.

A friend recently borrowed my COPs to see if his set were the cause of an idle stumble and WOT miss.
My 11 year old COPs fixed 90% of his problem.
He just installed a new set and now it is fixed 100%
My COPs are apparently getting worn/weak and I just ordered a new set.
I think we forget some times our parts are more than a decade old.

Tousley has them on sale for $214.00

 

[black03]

I run BR7EF plugs in my 03 Cobra, 2010 GT500 and 2013 GT500. All of which run on E85. They've worked excellent for us so far so there's been no need for us to switch.

Hope that helps.

Jared