j66

iTrader: (1)

my car is has test pipe, and intake. for sure i'll go 1 step colder then stock, but wonder if it'll be a bad thing to go 2 steps. what spark plug is good for my setup. and which brand will be better DENSO or NGK?

Denso Iridium:
IKH-20

NGK Iridium:
LFR6AIX-11 or LFR7AIX-11

if you guys have any pass expereience with any of the spark plugs, please give me some advice. thank you!

Jackie

faster than u

iTrader: (3)

i have the ngk 1 step colder

Rickdogg

iTrader: (234)

I've used the Densos with my nitrous and NA setup on and off the track and they have worked fine

taurran

iTrader: (18)

NGK's here. Been great so far, and cost less than the Densos.

Dubai

iTrader: (15)

+1 for NGK

Z1 Performance

iTrader: (564)

why on earth would you run a colder plug with such little mods...especially without FI?

j66

iTrader: (1)

coz i throught 1 step will make the car smoother, coz is 1 step cooler too much already? i should stick with stock temp?

InZomniac

iTrader: (2)

Everything I have seen says to stay in the factory range unless you are using nitrous, FI.

Sharif@Forged

iTrader: (92)

I'd only use one step colder with forced induction, or nitrous.

Nano

iTrader: (1)

+1 for NGK

they also cost less than the stock platinum NGK