What spark plugs?

4617 Views 8 Replies 7 Participants Last post by DanF., Jan 22, 2011

tuner4life

Discussion Starter · Jul 19, 2010

My 1992 9kt is mostly stock, and is running on a 2002 black DI from a 9-5. It has recently been brought to my attention that I may not be running the correct plugs for the car. The last time I changed them I went with NGK iridiums (I usually work on asian cars and these plugs are some of the best.) But I have heard multiple places that they produce too hot of a spark for my car and can cause hesitation and stumbling. I have not had any of these issues, but would like to run the best plug for the car anyways. What is recommended? What are you guys running? What brand and material?

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1 - 9 of 9 Posts

mcrowley

· #2 · Jul 19, 2010

Ngk bcpr7es

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ohlins8990

· #3 · Jul 19, 2010

ngk bcpr7es

-11

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HIDSPG

· #4 · Jul 19, 2010

ohlins8990 said:
-11

NGK BCPR7ES-11 are pre gapped to 1.1mm you can get the BCPR7ES and gap them yourself.

PS. Your car is Awesome in person. You should get some good pictures and post them

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tuner4life

Discussion Starter · #5 · Jul 20, 2010

Thanks! I will try to get some new pics up soon.

I am going to pick up a set of those plugs this week. What gap should they be?

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Svenska94Aero

· #6 · Jul 20, 2010

ohlins8990 said:
-11

HIDSPG said:
NGK BCPR7ES-11 are pre gapped to 1.1mm you can get the BCPR7ES and gap them yourself.

I'm thinking it's this^

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tuner4life

Discussion Starter · #7 · Jul 23, 2010

duh, reading fail. Nevermind.

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DrewP

· #8 · Jul 23, 2010

If the NGK Iridium plugs you put in are PFR6H-10's then you're fine, just leave them in, that's the recommended plug for the T7 9-3/9-5 and will work fine in your car.

Usually the BCP series plugs are cheaper than the PFR series plugs, but if you can order through a shop account they are usually about the same.

Best,
Drew