Im running a 35r at 30psi on pump i have ngk 2 step colder plugs and the hks amplifier as well the gap is at .022 the guy i bought it from was running copper 1 step so i also have a set of those a set of copper 2 step and a set of 1 step iridiums along with the 2 step iridiums in it now. reason for having so many sets is one for track and summer and one for winter and to see if there is a diff in how much i have to chnage them out between copper and iridiums. so with a .022 gap is that about right for 2step iridium? new to the evo 8's so i have been searching but i always come up with 1step at 25psi so figure id just throw my question out there as every car is diff but same **** applys for the most part. input needed please. Im running 93oct btw

 

are you having any spark problems at the moment?
0.022 is fine, run down to 0.018 if you are having blowout.

 

1+

 

Now I was told you cant gap the Iridium plugs with a plug gap tool is this true?

 

no blow out at all. runs the same as the plugs he had in it im wondering if i can gap bigger or if that will **** with the tune. you can gap iridiums just have to be carefull. the tip of the plug is iridium and is melted on to a copper tip. you have to be very careful no to brake that off

 

Correct, you put the plug in a table vice and use a pair of pliers to bend the ground electrode. Check gap with a feeler gauge only.

 

^dead on! and if you can just get as little contact with the tip as you can get away with accuratly..

what gap are people running with the 35r around 515whp?