gary77

iTrader: (1)

i've been searching for about 45mins for a definitive answer and just getting more confused.

last time i got the pfr7b and didnt change the gap , it seemed to be fine .

ive just put the car back on the road after a couple years,it hesitates accelarating around 4000rpm and 5 boost. doing a service should i go for 7s or 6s and what gap,

car is a version 6 sti , so jdm. decat kn panel filter , rest is standard , no ecutek map, i know i should ...

fat-thomas

iTrader: (4)

7s and 0.8 gap from memory I think

Reshard1977

iTrader: (17)

I thought they were pre-gapped too. My mechanic just fitted my 7's straight from the box. The car runs fine.

stonejedi

iTrader: (51)

They are usually but its good to check.SJ.

jaygsi

iTrader: (46)

I just check if they all look the same lol

AS Performance

iTrader: (4)

would defo use 7's and you can gap them to 0.65mm if needs be.......

gary77

iTrader: (1)

thanks for the replies

what do you mean "if needs be " why and when might that be needed , what gap size should i start with

fawor

iTrader: (3)

as he said, use 0.65 "blade" job done,if needs be he means if arent pre gapped, just changed mine 3 weeks ago and were with incorrect correct gap.

AS Performance

iTrader: (4)

no the pre-gapped std plugs should be fine but certain modified or high boost cars require the smaller gap of 0.65mm

gary77

iTrader: (1)

thanks again for your advise , just to clarify , almost standard version 6 sti , use pfr7b spark plug with a gap of 0.8 straight out the box .

modified cars may need a smaller gap