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Discussion Starter · #1 ·
john and I are installing our t-78 turbos. what spark plugs should we run and at what gap.

"going single baby.."
 
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I have been told that MKIV's love the NGK's no matter what stage you're @. I believe the # is 3330 - pregapped from Dusty to the right spec.
 

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silvermkiv
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Beautiful car and engine bay! I think most singled cars are using the ngk 3330's. Just play around with the gap. Probably start around .032 and see if it misses at high boost/high rpm's then go down from there. Im at bpu+ with exhaust cam gear set to -4.5 running a tight .030 gap. Idle is a little rough, but it doesn't miss at the higher rpm's with boost cranked to 1.4 bar.
 
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