My car has 59k miles. Files rough also. I never thought sparks may be an under lying issue. If I plan to flash tune would sticking with the bmw oem be fine or should I do what others are saying and gap them?
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2012 bmw 335i sedan
VRSF catless DP
VRSF 5? HD IC
Stock intake(had open before and was sick of noise)
BMS CP
550i 351m rims with 275/245 set up.
No tune as of yet.
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