Plugs are fine but i would strongly recommend to go to the bkr7e's. 5 heat range plugs are way too hot of a plug for turbo use.
No signs of detonation or running lean.
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1992 Nissan Sentra SE-R - Fully Built SR20VE, BWS400SX Billet 67mm and much more
JMS Racing tuned to 716whp, 423wtq at 29psi
10.5 @ 149.2mph to date I believe the fastest trap speed SE-R, Much more to come with some changes!