Did you gap the plugs down?

Edit: Oops not reading all the way again. I think the gapping will fix the issue.

 

I'll give you a call, I still have your number.

 

I gapped the 1 step colder plugs to .035. Just popped the code again yesterday while sitting at idle. I knew it was going to happen cause the car sounded like it was stumbling really bad.

 

I've had the same code thrown on mine along with O2 sensor 1 rich. I'm hoping the new downpipe will help with both problems.

 

I haven't popped any other code other than P0300.(random/multiple misfire) I was thinking I could be running too rich and that was causing the misfire, but you would think I would receive a "too rich" code.

 

12NV and BPL as I discussed with you 12NV on the phone I have a theory on the 0300 code we are going to be testing next week. Should have a solid answer for you then BPL...

 

Ok, sounds good. Let me know if you want another car to test the fix.

 

Will do...I should know more mid next week.

 

Rob,
I will be testing the fix we discussed mid-next week as well. I've popped this code (P0300) multiple times in the ~150 miles I've put on the kit. I'm also getting some other codes as well (five in all), and I was wondering if you had any input on them....Check out this thread:

https://my350z.com/forum/forced-induction/130396-need-help-from-someone-with-an-04-shop-manual.html