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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > 2012-2019 BMW 3 and 4-Series Forums > General F30 Sedan / F32 Coupe / F36 Gran Coupe Forum > Spark Plug Gap
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      10-15-2021, 01:35 PM   #1
Bmweth24
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Spark Plug Gap

Installing my Precision Raceworks ignition kit toady and wonder what I should gap my plugs at (97506). I haven't found any post that talks about gapping with these coils.

2014 m sport 435i rwd fbo upgraded turbo
VRSF Chargepipe, vrsf race fmic, and hi flow downpipe
BMS aluminum elite intake
Stage 2H 93 bootmod3
ngk Cold spark plugs
oem ignition coils
Vargas stage 1 upgraded turbo
92500 miles
xHP stage 3 transmission tune
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      10-15-2021, 04:27 PM   #2
thejeremyman9
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Stock plugs stock gap unless you have problems then go colder plugs smaller gap. You want the largest gap possible without misfires. Start at stock 0.030-0.032'' and only reduce as necessary. In theory a "stronger" coil should support a larger gap. Your mods should not warranty colder plugs and smaller gap, although everyone's car responds differently.
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