denso iridium plugs iq22 for accord's

[excoupe23]

I have a set of iq 22 iridium denso spark plugs. I have a 91 accord ex and according to denso's website, the plugs for accord's are iq16, the # has to deal with the heat range and the higher the # the colder the range gets. My question is that I wanted to know will using plugs with a difft heat range have any negative effects.

[integrasedan]

if your engine temps aren't hot enough for colder plugs, the plugs will get fouled with carbon deposits. which means less plug life.

[Phatestman]

Go with the stock irridium plugs if your car is not modified. I am not famillar with that type of part number for the irridium so go to a parts store that carries irridium plugs (such as auto zone) and compare numbers on the plug with the irridium stock plugs they show you. They will also have a catolog that will show the heat ranges of the irridum plug if you ask to see it. If you are not running alot of high performance I would recomend ditching the denso irridium and getting standard denso's in the stock heat range.