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iTrader: (59)

What are the best plugs for a moderately tuned MY05 WRX full decat inc up pipe STI8 TMIC and a remap.

Been advised to get a heat grade 7 NGK plug but what is the difference between the following and which is better for the above set up

1. NGK PFR7B
2. Iridium NGK BCPR7EIX
3. Iridium NGK BKR7EIX

also would I be correct in saying they should be gapped to 0.8mm.

cheers

richiewong

NGK PFR7b's, they're platinum plugs gapped to 0.7mm should do you.

Arch

iTrader: (59)

cheers What is so special about the iridium ones that makes them more expensive?

zaxs1973

Something to do with the conductivity of them its better, thus reducing resistance within the plug, hence the cost..(I think!!!)

Regards Paul Leeds

Arch

iTrader: (59)

Thanks zaks

GROWLER_GRRRR

i need some ngk 7 ss HOW MUCH ARE WE TALKING ??

Arch

iTrader: (59)

Just checked some prices
PFR7B £7.34 each
BKR7EIX £5.50 each
BCPR7EIX £8.14

Anyone know which is best for set up above.

GROWLER_GRRRR

arch where is the price from for the ngk 7 (pfr 7b )

thats a good price been quoted 1499 each up here in newcastle . ouch

Midlife......

iTrader: (2)

As far as I am aware Pentland Components are the cheapest for spark plugs but not used them myself.

Shaun

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iTrader: (59)

Prices from http://www.spark-plugs.co.uk/index.htmalong with the following reply to my query.

Query

Looking for some info. I have a MY05 Subaru Impreza WRX Turbo. I am about to have it remapped and have a full decat exhaust and decat uppipe, larger intercooler and a few other mods. I need to use a heat grade 7 NGK plug. I am a bit confused as to which one would be best. I have looked at the following three and would appreciate your advice, PFR7B, BKR7EIX and BCPR7EIX. I appreciate the EIX items are iridium but there is quite a price difference between the two iridium plugs so is one better suited than the other and are either a better choice over the platinum option.

Answer
Forget the BCPR7EIX, it's very similar to BKR7EIX but designed to fit Japanese direct fire coils - not necessary for your application. PFR7B may outlast BKR7EIX but BKR7EIX should offer best value and good performance.