Denso Iridium Spark Plugs

Parf · July 16, 2007

Hello

I have just imported a standard Altezza RS200 and I have some Denso iridium IK22 plugs laying around. Can I put these in? and whats the difference between the IK20's and IK22's, apart from the price.

Cheers

MacRS200 · July 16, 2007

IK20s are the recommended grade for the RS200.

The IK22 is 1 grade colder than the IK20. I had IK22s in the set before this one and they were OK but think that they may have been a little too cold. I had some hesitation after idling problems that I suspect may have been fouling. Gone back to IK20s now and it is better.

Parf · July 16, 2007

Thanks for the response, ill get some IK20's then if you have had problems. Is your car standard or have you tuned it?

IK20s are the recommended grade for the RS200.
The IK22 is 1 grade colder than the IK20. I had IK22s in the set before this one and they were OK but think that they may have been a little too cold. I had some hesitation after idling problems that I suspect may have been fouling. Gone back to IK20s now and it is better.

MacRS200 · July 16, 2007

Thanks for the response, ill get some IK20's then if you have had problems. Is your car standard or have you tuned it?
IK20s are the recommended grade for the RS200.
The IK22 is 1 grade colder than the IK20. I had IK22s in the set before this one and they were OK but think that they may have been a little too cold. I had some hesitation after idling problems that I suspect may have been fouling. Gone back to IK20s now and it is better.

List of mods is in my signature below this, currently power is around 220 Bhp. The problems that I had were minor so you should be OK with the IK22's. Most of the peeps on here get them from HERE in the US if you want to get IK20s. About £20 for a set of four plus shipping.