Denso IK22s

[Puckpimp71]

rock my world... pricey, yes. Worth it? yes

 

[byohndspeed]

i have those in my wifes turbo civic. they work great in her car. i just have been to broke to buy them for myself.

 

[jrodhotrod]

Any more details?

Like what is the heat range on them?

What do you have them gapped at?

What is the difference between the 22 and 20 (Which comes in an extended reach plug)

IK series
IK16. IK20. IK22. IK16L. IK20L. IK16G. IK20G. IK22G. IK24. IK27. IK31. IK34
<table border="0" cellpadding="0" cellspacing="0"> <tbody><tr class="text70" valign="top"> <td>･ </td> <td>Mainly used for cars. ISO type.</td> </tr> <tr class="text70" valign="top"> <td>･ </td> <td>14mm dia. X 19mm length type.</td> </tr> <tr class="text70" valign="top"> <td>･ </td> <td>IK22 and above are for tuned engines, with a spark gap of 0.8mm.</td> </tr> <tr class="text70" valign="top"> <td>･ </td> <td>IK□L is extended type (spark position 5mm)</td> </tr> <tr class="text70" valign="top"> <td>･ </td> <td>IK□ G equips a sus (stainless steel) Gasket</td></tr></tbody> </table>

 

[jrodhotrod]

This page offers some good info:

http://www.densoiridium.com/faq.php

So it appears that IK20 is the factory heat range and IK22 is one step colder.

Too bad you can't get the 22 in an extended reach plug.

 

[Puckpimp71]

My car's running MUCH better now than when I had the extended reach copper NGKs on there.