hi, i have 2006/7 2.5l wrx with mods exhaust system tmic uprated fuel pump vf34 turbo cold air induction kit, if i need to change spark plugs which do i go for. thanks

 

You'll want some "7's"

I found ebay the cheapest when I got mine. Look for NGK PFR7B

 

Can I ask the same advice but for my 2003 STi PPP (UK)....? Decatted with Bov and green filter. Also, the Pro-drive exhaust has been replaced with a Nur Spec S.

Just trying to get it serviced before I remap the thing....

 

The 7B don't fit the hawkeye.

You want ILFR7H. Evo 9 plugs basically.

 

If your going for a remap then you should also go for the 7's and gap them to 0.65mm. The 7's will fit your car.

 

NGK PFR7B. Same as my 2003



Apologise, I didnt realise the OP had a Hawk, just presumed it was a blob like mine for some reason

 

cheers people.... i'll start scanning ebay....

 

as above, the 2.5 litre wrx/sti block takes ILFR7H (the colder plug) and the 2.0 litre blocks take a PFR7B (also colder) these are the model no's for the NGK plugs

Luther i ordered my plugs this morning from here CAR SPARK PLUGS - NGK, Champion, Denso, Bosch and SplitFire Spark Plugs

I found them to be the cheapest Iridium plugs at £11ish per plug compared to some companies who wanted £17ish per plug