I was told by the Blitz USA folks to run a one degree cooler plug once I got the SC
installed. I decided to go with the NGK Iridium plugs. I had to special order them.
The only place I found that even carried NGK was Advance Auto Parts. The stock
Iridium number is BKR5EIX. One degree cooler is BKR6EIX. They just came in
yesterday, so I'll put them in tonight and let you know if I see any improvement.

What are you running?

 

Try cross refrencing those plugs to some copper plugs...they are really cheap...like $2 and they work the best with boost. You gotta gap them different than the stock gap though...like a .025.

 

I will be running Blitz Irridium Spec77 T7340B-8
thats what came with my kit.

 

I read somewhere that the blitz plugs are made by NGK. On a side note, the car went in today for the new clutch.

 

U getting the greddy kit for your rs3?
I want an rs3...
with a greddy sc...

 

Only if you have six very lucky lottery numbers for me. The wifes car will be mostly stock.

 

typically w/ any boosted car that didn't come stock turbocharged/supercharged just to be on the safe side you'd probably want to run a 1 step colder plug. 2 step maybe a little overkill if you're not running higher boost levels or higher levels of compression.

as a note, some cars run great with copper plugs, some cars don't. most subaru guys will swear by coppers while some other manufacturer's turbo cars won't run the greatest with them.

 

dont mean to aska stupid question. buuut what happens if you run that plug on a car with I/H/E would i see a diffrence the regular plug not the 1 degree cooler plug.

 

with minor bolt-on's like that don't waste your money. a good set of stocks will work just fine when the old ones crap out on you.

 

yeah, and you should have 120k i think on the stock ones.

 

When I was racing my eclipse gsx, it was recommended for each gain of 75-125 HP to go 1 colder spark plug. I would still recommend to go 1 colder spark plug with a supercharged or turbo Xb. Not for I/H/E.

 

I had my greddy sc installed 3 weeks ago with the stock spark plugs.I put the ngk iridum bkr6eix plugs in today. " NASTY"

 

always drop a heat range when you boost your car. or increase the boost. colder plugs mean less chance of detonation, but will dirty faster. id rather change my plugs more often than replace my motor... does anyone have the part number for NGK copper plugs one heat range colder?

 

i just got the BKR6EIX.
what gap are you using?
have any of you experimented?

i have the blitz SC, btw.

thanks

 

ngk

 

NGK Iridium...

 

so you guys are using the stock gap then, eh?
anybody tested for optimum?

 

i used to gap em at .025 and the plugs were one step colder

 

^^ thanks, man. any particular reason for 0.025"?

for everyone's reference, stock is 0.028-0.031" (0.7-0.8mm).

 

increase in atmosphere makes it more difficult for the plug to spark. i had that problem with my GP when i changed the supercharger pulley, it made it misfire in the higher RPM's when boost was at its peak, 12psi, because the plugs weren't able to spark, gapped them down and it ran great...