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I am still driving with the Becker coils without any problems. Sparkplugs cap is at 0.75 mm. Also curious about the "Swedish" ones.

I changed the sparkplugs and gapped the fresh once at 0,8mm, just to see if I would get any blow outs, but so far so good. Am in the middle of tuning session with 3,5" intake.

Hello, I adjusted my signature so you can see the mods. The HKS product was very easy to install, because it came with a plug and play harnass. All I had to do was plug it in the ignition wiring without cutting, find a space for it under the hood of my Mazda 6 MPS and connect earth wires! Link...

Hello, I bought those and installed them. They are working fine. Spring inside seems harder and the package is topclass. All in separate boxes with padding! I also have a HKS Twin Power connected to them. That was right from the start. Don't know how they perform without the HKS.