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Mazda 6s 2007
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Discussion Starter #1
So on my 6s gt I have a lot of mods and possibly could be pushing more horses but not to the point of rocket speed, but my question is what could cause that cold start to make the rpm flacuate up and down during cold when the rpm is close to 2k, I remember when I first got the car I changed the ignition coils with some cheap $40 ones, and I believe after modding the car a bit and the engine pushes more maybe those coils are cheap and won't produce much voltage? Or cannot keep up, maybe get oem denso ignition coils which costs an an arm, could that be better for the car and would that have to do with the rpm flacuating a lot during cold start. Spark plugs changed last year and they are best in the market NGK.

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