I've got an EVO IX with following mods:
-ported exhaust manifold (Buschur)
-3" downpipe (Buschur)
-BLOX 3 " Testpipe
-Buschur UICP with stock BOV
-Buschur cold air intake MAF
-Buschur inline MBC at 20 psi

Anyways, I just replaced the spark plugs with the same as stock (NGK Laser Iridium) plugs. Very easy job I thought. I went with the pre-gap on the plug as it came (about 0.24) . Well, as soon as I started it up, it was idling very rough, then it started to back fire and misfire. I then tried to increase the gap to 0.26 and same thing. Then I tried to under-gap it (0.22) and once again the same thing!! So now I tried to put the old plugs in and once again, same misfire and backfire along with rough idle. I can smell a lot of fuel as it sits at idle. Can this be an air:fuel ratio issue.
Please help, I need to get this car running soon!!!
Thanks in advance!!
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The stock plugs arent iridium.

 

did you plug wires in the right order?

 

It wouldnt even start if you had them the wrong order

 

Yea it would depending on how they are plugged in. It would just mis like a ****

 

I did it once to a dude and the car wouldnt even start.

 

It depends how they are plugged in

 

What's the proper order? I plugged them in just as they were before I took them out. The Evo IX plugs are NGK iridiums though. I don't know what to do. Do you think I have a wire issue?
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Have you done any other work on the car around the same time?

 

OK, I got it running again. It was the coil pack and the wires that were gone. Why would these go bad now though?
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