Hey guys.

Just a wee question about plugs.
Im getting judering when giving my 96MY STI a bit of lick at about 5000-6000rpm. Came to the conclusion that my ignition system is needing a service.

Whats the best make of plugs and what price would i be looking at???

Cheers.

Chris.

 

NGK PFR7B's

http://shop.scoobynet.co.uk/Product.asp?ProductID=384

 

Seen these on Ebay. Are they any good???

http://cgi.ebay.co.uk/ws/eBayISAPI.d...920651796&rd=1

 

They're the ones but you can't tell if they are 6b's or 7b's from the pic, for an STi I would use, and do use, 7b's.

Actually looking closely at the base of the box I'd say they are 6b's
Good price though rrp is about £15 per plug

 

the guy nevers answers your questions on ebay to if they are 6's or 7's

I just got a set of HKS S40's which I am getting fitted tomorrow for getting the car mapped

£65 delivered

 

Rite. I got the mechanic to get me stuff from work 2day. He got plugs for very much cheapness. NGK Laser PLatinums. But they are the 6's. Mines is an STI V2. Does this make a difference? ITs no probs getting them changed if i need to.

Cheers.

 

6's are for a std car, however most will run better on 7's with increased boost, etc.............
alyn - asperformance.com

 

Im just runing normal 1bar boost with full de-cat straight throgh system. Ill get them changed 2morow.

 

I think 7B's are a good buy if engine modded a bit or you have aspirations for future mods, boost increase etc.

Mine have been super! No dearer IIRC than 6B's

 

the 7b is the standard plug for an sti

 

So this is my best buy then?

 

oh yes, alyn at as-performance(stockcar) does them for £35 a set

 

I got a set of 6's (albeit the rong ones) for £16 through my work!!!!

 

do you work for NGK???

 

LOL. No mate. I work for a coach tour company in Edinburgh and he gets things at trade price plus a discount. Well chuffed like!!!!!!

 

i bet you are

 

If any one wants anything im sure i can sort sumthing out!!!!!!!

 

Wanna do a group buy on your discounted 7B's then if your colleague can get them LOL!!

 

NGK 9's are 65 -100 quid and will last you on a scoob bout 20k maybe more.

Ten minute swap and ya away....

 

well i just had new plugs in mine cost me £100 plus fittin

 

NGK PFR6B's are std, 7B's are a bit cooler for the 300+ motors / higher boost, 8B's are more like racing plugs I understand IIRC, so what the hell are 9's like!

Maye be too cool / hard to run normal power and start, foul too easy ??


Any one know?