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Best spark plugs?

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Old Mar 5, 2012, 06:19 AM
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Best spark plugs?
what spark plugs do you run in your evo?
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Old Mar 5, 2012, 06:49 AM
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We always use either the NGK BPR7ES or BPR8ES depending on the set up! Let me know if you have any questions with which ones to use!


-Justin
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Old Mar 5, 2012, 07:40 PM
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Originally Posted by Justin at STM
We always use either the NGK BPR7ES or BPR8ES depending on the set up! Let me know if you have any questions with which ones to use!


-Justin
this is my setup what do you think?
ACT HDSS clutch w/ OEM resurfaced flywheel
-Buschur downpipe
-Apexi intake
-Sparktech non-cdi coil-on-plug ignition
-CBRD short route UICP w/ CBRD battery tray
-Buschur 3.5" street FMIC w/ Buschur LICP
-Walbro 255 LPH fuel pump
-Hallman RX manual boost controller
- IX metal diverter valve
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Old Mar 5, 2012, 07:42 PM
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I've had success with autolite 63 copper. They're cheap too!
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Old Mar 5, 2012, 07:50 PM
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I got a set of plugs from map and I think they are the wrong plugs because they look shorter like the evo 8 plugs
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Old Mar 5, 2012, 09:59 PM
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Originally Posted by Frew
I got a set of plugs from map and I think they are the wrong plugs because they look shorter like the evo 8 plugs
What is the designation on the plugs that you have? Best to call MAP.
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Old Mar 5, 2012, 10:08 PM
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Originally Posted by IHEARTEVO8
I've had success with autolite 63 copper. They're cheap too!
How much boost are you running and what fuel in your particular setup? We never used to run Autolite plugs in most West Coast Turbo Buicks back in the old days because they had a propensity to detonate compared to the preferred AC Delcos at boost levels over 17 PSI on pump gas. But, maybe I am comparing apples to oranges. However, at least, in the case of turbocharged Buick V6's, Autolites were just not where it's at. Of course, this was way back when....
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Old Mar 5, 2012, 10:11 PM
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Yeah, what Justin says! Maybe I would add the NGK BR7ES(my personal favorite) to his short list as well.
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Old Mar 6, 2012, 04:04 AM
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I also run the BR7ES.

However, the last time I was visiting CBRD, they advised me AGAINST using those plugs, and to go back to using an iridium plug like stock.
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Old Mar 6, 2012, 04:31 AM
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BPR7ES gapped to .20 E85 650hp
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Old Mar 6, 2012, 08:44 AM
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we only run Iridiums-

factory in evo IX, and evo 8 depending on the build- BPR7EIX or one step colder- sometimes non protruded-

cb
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Old Mar 6, 2012, 08:52 AM
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On gas, depending on the build you could go one step colder, on E though I run stock heat range 7.
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Old Mar 8, 2012, 08:03 AM
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Hi,

in my uk 8 mr running 400/400 i just fitted some ngk BPR8EIX, and dyno tested and mapped just after --- everything ok
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Old Mar 8, 2012, 08:33 AM
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I use BR8ES now. Used the BR7ES on the stock turbo years back.

My car has always preferred the non protruding tipped plugs. Never had a spark related issue on my car
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Old Mar 8, 2012, 09:37 AM
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Originally Posted by cbrd
we only run iridiums-

factory in evo ix, and evo 8 depending on the build- bpr7eix or one step colder- sometimes non protruded-

cb
+1
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