mjm4jc

Has anyone used the Iridium racing spark plugs?

dj55b

iTrader: (2)

I'm using them right now ... don't really feel much of power difference but the car does start up quite a bit easier.

Rx-7Doctor

iTrader: (13)

I used them in my Se once and there was a power loss and it did not idle well. That was when I still had the stock coils.

mjm4jc

Thanks guys. With the 2GDFIS I'm assuming it would be a waste of money to put 4 of these in. The trailing side really wouldn't benefit from such a plug. I think I'm just gonna put 2 in on the leading side and leave the trainling side stock. What do you guys think?

vipernicus42

iTrader: (4)

Yeah the Iridium plugs are all made for direct-fire ignition systems, so since you have 2gdfis you'll be good to put them in the leading and leave stockers in the trailing. On a stock distributor-coil setup though they wouldn't work very well I'd imagine.

Jon

dj55b

iTrader: (2)

ya both my leading and trailing are using second gen coils.

Rx-7Doctor

iTrader: (13)

Did you mean to say that you are using second gen plugs in both the leading and trailing? Or are you running a megasquirt and running the the CAS and 2nd gen coils?

vipernicus42

iTrader: (4)

He's got a CAS, 2nd Gen coils and an MS.

Jon

dj55b

iTrader: (2)

I've got the lot