Mazda 2008 MazdaSpeed3 Wartungshandbuch PDF herunterladen (Seite 10)

false knock is to fill your fuel tank with 2-4 gallons of higher octane unleaded race fuel, around 100

octane will suffice. If the KR is still present, it's likely that your current DI fuel injector seals are

failing or have failed. Several manufacturers offer after market alloy injector seals that are better

suited for the higher temperatures and cylinder pressures realized by higher horsepower

MAZDASPEEDs. If you plan on generating more than 350WHP or you notice a sudden change in

your Knock Retard response, you may need to replace the stock DI injector seals. You can simply

type “mazdaspeed injector seals” into your preferred web search engine and several options are

available to you.

Service Bulletin Update - Appropriate Spark Plugs

Our data has shown that the factory spark plug temperature range (6) and gap (~.034”)

are sufficient for stock boost levels and normal driving conditions. Although, operating the car with

higher than stock boost levels or with the calibrations that are loaded on the AccessPORT, require

that a spark plug gap of .026” - .028” (6.6 – 7.1mm) be used on a 1-step colder temperature plug.

Denso currently offers this spark plug as part # ITV22 (please be sure to verify each plug is

properly gaped before installing them). Our experience has shown that operating your turbo-

charged engine at higher than stock boost levels requires that your spark plugs be replaced at

around 12,000-15,000 mile intervals.

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Mazda 2008 MazdaSpeed3 Wartungshandbuch Seite 10