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I have a stock diameter Corksport ram air intake and BNR S1. It is on the stock Cobb map (should be same as Mazda OEM afaik). Everything else is bone stock. I only run 93-octane fuel. I'm getting P2188 (Rich at idle) and can verify it idles rich, at least if the AC is off... either way, LTFT is...

Last January I had to replace my turbo because of the common smoking issue. All was fine until I discovered an exhaust leak between the exhaust manifold and turbo, and re-tightening the nuts fixed it. But it kept coming back, so I ordered OEM locking nuts to replace the generic exhaust nuts I...

I replaced my turbo with a BNR S1 recently and while this noise didn't happen at first it's developed after ~900 otherwise flawless miles. I'm fairly certain it's a boost leak, but I'm relatively new to turbo vehicles and wanted others thoughts. Thanks