Spark knock vg33er

Forum for the Xterra, Frontier and Hardbody, the smaller workhorses of the Nissan lineup!
Superduperchargedvg
Posts: 20
Joined: Wed Jun 17, 2015 5:51 pm
Car: 2002 frontier supercharged 5sp 2wd
Vg30 cams
Polish head and Intake
Short ram
Thorley headers
Custom exhaust

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Spark knock at 3k under boost( throttle) anyone else ever experienced this with a vg33er


califrontya
Posts: 7
Joined: Mon Aug 17, 2015 5:55 pm
Car: 02 sc fronty

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Yes, originally had this issue when i changed to a smaller pulley, and needed to step the plugs up to the next cooler heat range (7 for ngk). other than that, boost below 3k is hit or miss depending on if your ecu has gone open loop yet or not. I find mine to be unhappy below 2.6k. Check your o2 (fronts) to make sure they havent become slow to switch. I have to change mines out yearly.


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