I run the bosch platinum +4. But I have a 19% pulley and I know I need to run a colder plug especially here in florida where it is hot(at least 95 degrees) so whch plugs should I run I went ot the parts store and they had no clue what the next cold plug down would be.

So what should I use, I am not opposed to running NGK that have the electrodes like the platinum +4. But I dont know what I heat range to tell them or which part number.

I would like the part number for the next colder plug from the factory, but in the bosh platinum +4 or if I have to the NGK.

HELP PLEASE!

 

Denso IK24. Most would recomend IK22s & still a very good choice but with 10% meth mandated in this state, my car is liking the 24s better.

 

IK 22s for me, and they are really good.

 

Where Is The Best Place To Buy?

 

Denso IK22 are the best!!

I wouldn't get anything else.

 

Had a very, very bad experience with Bosch platinum plugs in a turbo car: the tiny sintered platinum electrode burned away in under 200 miles. I could drop a pin into the hole where it had been and it was 1/8" down from the surface. Happened to ALL of the plugs and I was wondering why it began misfiring just a couple days after I put them in...

In lower heat applications, I've seen the electrode come OUT shrinking the gap too so I can unequivocally recommend against using Bosch platinum plugs of any kind. It doesn't matter how many ground electrodes they add when the problem is their center electrode. May want to check yours.

BTW with Bosch lower numbers mean a colder plug.

 

I am also looking for plugs and get a lot of motorers that like the denso's. I was looking more toward the BERU Ultra X. However, I have not found anyone else who has used them. Just by looking at the specs they appear to be suited to the Nology Hotwires that are in the mail.

Has anyone done a dyno/road test for any of these plugs? I am open to suggestions from all. I live in Hawaii so the price of living here comes in all things shipped here. So I want high quality, long life and reasonable cost. Is that even possible with a mini??

Budd, with riscci (03 MCS DS/W)

 

Should the CVT guys consider a different plug vs the MCS? I am looking to buy some for my CVT soon. Thanks

 

When I put on my CAI and 17% pulley I also installed one step colder Iridium plugs from NGK. The NGK part number is BKR7EIX-11. I'm very happy with them, and the car runs great in Dallas heat. $6.95 each from SparkPlugs.Com.

 

OEM is NGK BKR6EQUPK (4 prong platinum) NGK website doesn't list a colder plug variant, when searching by make.

I've heard iridiums produce better power over a shorter life span compared to OEM and that Bosch plugs have a tendancy to blow out of cylinder heads. I was in the market for iridiums and a vender talked me out of it, also mentioning to stay clear of Bosch.

 

If you are looking at Densos, I think the Coopers (non-S) use the Denso IK-20s instead of IK-22s.

 

Cooper and stock Cooper S should use IK20.

IK22 are one range colder, which is good for Cooper S with a pulley.

I think some 19% pulley guys also use IK24...??

 

i am looking on ebay for IK22 and IK24, they aren't listed for mini, but for honda. this is the same plug for the mini right? here is the ebay link

 

Anyone else running IK24's? I am probably going to install some new plugs on my car soon along with an oil change.