TwinTurbo.NET: Nissan 300ZX forum - Mike - maybe Greg or Seb can chime in and correct
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Subject Mike - maybe Greg or Seb can chime in and correct
     
Posted by The Devils Z on June 19, 2008 at 11:40 AM
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In Reply To I always thought Iridium Plugs weren't good? posted by collegeboy on June 18, 2008 at 10:57 PM
     
Message any misspeak of facts that I might make ...

I "think" the cooler plugs are helpful for high boost applications and NOS setups (which you obviously will be in) but at the sacrifice of loading up at low RPM ( street stop and go ) and may require more frequent than stock replacement.

If your turbo is operating within it's efficiency - the 6B-11B should be fine. I have always had them without issue and I've boosted pretty high in the past ..however --I have other things in place that you may not have to assist in keeping intake temps down --

a) water injection * definite must when the ambient air is hot -- aka summer months --
b) ash spec massive intercoolers
c) ash spec intercooler piping
d) efficient psi range of turbos ( with the size that u are getting - shouldn't be an issue here )
e) custom tuning - if your ignition timing is tuned appropriately, the cylinder temps should be within acceptable levels ( as evidenced by EGT temps )

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