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Might be getting down to the main issue as the PCV. Drove about 800 mile round trip checked oil levels and was about a quart and half low. Even with E85 didn’t fix the knock.

Yes I went back and double checked plugs cylinder 3 gap was .032. I regapped all the plugs to 0.028. Even the quality of gas I’m not sure locally who has the best quality gas. Id say Casey’s or Philips 66. When I do refill with gas should reflash the tune disconnect the battery to reset the ecu?

I’ve tried refilling at my local Casey’s gas station 91 octane didn’t have 10% ethonal so I added 2 gallons of E85. I did a minor pull to pass someone knock on the acessport WOT still showed 6 knock. I’ve tried it’s only comes on at 4-6k rpm. But why doesn’t come in on a lower rpm.

New to the Mazdaspeed 3 Space and as usual with buying cars you think are gonna be awesome their are always flaws. MODS: Cork sport HPFP, HPS CAI, EBAY TURBO INLET, Dual port BOV EBAY, JBR Poly mounts all around, Cork sport OCC. CONDITION: 6,000 miles on long block, 6,000 miles on turbo...