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Discussion Starter #1
I have search alot but I see a hope different numbers.

It's a daily drive stock z6 engine with a gt2860rs turbo on 7,5 psi.
What is the best spark plug I can get? And I need gab it to 22-25 thousand?

Sorry for my bad English.

Sander.
 

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When i was searching what plugs to use, most threads came up with NGK bkr7's.
Where they need to be gapped will range. Mine are at 30 anymore and it breaks up in boost.
 

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Classic Man
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i would go ahead and recommend BKR7E plugs as well. NGK part number 4644.

they are 2 steps colder than stock, and also have an ISO projected tip, which is less aggressive than the projected tip on the stock plug.
 

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i have always used the NGK 1095's. worked well in every car i have put them in.
 

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Well.......
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i would go ahead and recommend BKR7E plugs as well. NGK part number 4644.
used the same ones in mine when i had nitrous.. i paid like 15$ for a set
 

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used the same ones in mine when i had nitrous.. i paid like 15$ for a set
you paid to much

orielys, autozone, advanced all have em for 10 a set.......


go with bkr7e you have to ask for part number 4644 as they changed the part number on them but when you open up the box and look at the plug it will be stamped bkr7e.

as for the gap leave it as is, if it breaks up gap it down a couple.....repeate till you dont break up......you want the biggest gap as you can without breaking up

im at 22psi on a hx35 and running 23thou
 

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ive always ran bkr8eix
just a personal pref down fall is that they are $7 per plug
and like stated above run a gap large enough to where it doesnt break up. if it does start popping a bit up top close the gap. my last setup that gap was at 20thous but was at a pretty high boost number
 

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i dont think he does as i had a d15 running 12psi out of a pulsar sr20 t28 that flowed more than the standard sr20 gt28.....ran fine till i spun the bearing
 

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i would go ahead and recommend BKR7E plugs as well. NGK part number 4644.

they are 2 steps colder than stock, and also have an ISO projected tip, which is less aggressive than the projected tip on the stock plug.
I use these and gap them at .22 for running 21lbs w/meth and 90oct

Amazon was the cheapest I found.. atleast for where i live
 
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