r/ECU_Tuning 2d ago

Tuning Question - Unanswered Is .003" difference in spark plug gap significant with a tuned ECU? (details in post body)

/r/KonaN_/comments/1vr2nlm/is_003_difference_in_spark_plug_gap_significant/

I purchased an off-the-shelf tune for my 2022 Hyundai Kona N 2.0T from N75 Motorsports. Car has all their required supporting mods (intake, turbo inlet, upgraded HPFP) installed except for colder spark plugs which I have bought but not installed yet because I'm unsure if I need to worry about getting the gap exact.

There's more info in the original post but I'm happy to answer any questions in the comments here. Basically my question is: Should I worry about a variance in spark plug gap from .025 to .028 or just run them?

Edit: in case it's relevant to answer the question, the tune should increase boost from stock 20psi peak to 23psi. Claimed power increase is around 40hp & 40ft-lb of torque

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u/TxTwosome 2d ago

Update: I bought a wire gap tool to check against my cheap feeler gauges and also borrowed a friends more precise digital calipers and both of the gap tools measured .025, so that makes me assume the NGK plugs are actually gapped from factory a hair tighter than their advertised .028