Thanks for reviving this thread great info. Now im going to look towards buying my BR COP.

 

I dont know what plugs I used... I mean I do know they are NGK copper plugs for a IX but I dont remember the #.

VIII guys are weirdo's with there non MIVEC heads and weirdo plugs

 

Oh yea lol forgot you had a IX.

What are you VIII guys using?

 

I'm using NGK BPR8ES @ .022 on the stock ignition

 

Same here. Ive ran these plugs up to 1500 miles at these power levels on both 93 and 100oct Sunoco Gt260 with 30 psi and not had the stock ignition skip a beat yet. I would think race gas would change all that.

As soon as I do drop in and put the right cams in the car A BR COP would almost be a must after a fuel system to support the HTA 35.

 

i run the br7es but think i might have to go a 1/2 step colder and get the bpr8es because i think im starting to get a little break up at high rpm, my coils are prolly getting a little wore out too. (67k miles)

 

I ran them on c16 with the same AFR as pump gas and the same boost but added some timing...no problems. I suspect that with more boost/fuel it could have become an issue though. I'm buying the COP to make sure I don't have ignition issues on the new setup when I'm making much more power.

 

Im looking forward to the DLLs after the BR long block!

 

What spark plugs do you use with C.O.P. ?
I prefer NGK's,any NGK part number for Evo IX?

 

I told you google.com is your friend.. 15seconds.. i found them.. A whopping 145.00 a set.. Enjoy..

NGK R7437-8

 

Are you broke yet?

-E