I have a S13 blacktop, you guys know what’s the spark plug gap on this?
I just did a quick search on google, and this is what I came across on a tuning and performance tips page…
The SR20 has a powerful stock ignition that can fire through turbo boost and NOS. Gap the plugs at 0.045". If you experience misfire under squeeze or high boost (and the rest of the ignition system is in good condition, like the cap, rotor and wires) you can close the gap down to as small as 0.020" to prevent it. Go down in 0.005" increments until the misfire stops. Higher cylinder pressures cause by big NOS or high boost requires smaller gaps with the stock ignition. The smaller gap loses a little power but this trick can tide you over until you can get that snazzy turkey roaster ignition.
I believe I set mine to .030
I can’t remember anymore.