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Discussion Starter · #1 ·
ive got heat range 7 irediem plugs in my r33 gts is that right ?

just stage one mods like exaurst air filter dump valve de cat etc etc

had one crack the other week and will get a new set but wante dto klnow if the 7s are ok for my mods
 

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4,785 Posts
me too
and only mods i have are

apexi filter
japspeed 3"downpipe/elbow
decat
apexi zorst
GTR FMIC
 

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Discussion Starter · #5 ·
ok cool i was thinking of droping down to 6s see if the car ran any smoother etc what do you think ?? could 7s be too much for my mods ?
 
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