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Originally Posted by trish07
To me, it's still not normal. HKS do not rust. Borla do not rust. Nameless do not rust. I mean, if you design an exhaust, I'm of the opinion you should prevent corrosion. It is logic!
If I buy a home, I expect it not to collapse lol. If I buy a car, I expect it not to brake in 3 months. When Mazda had rust issues with their Mazda3, they had to do something, it was not normal and their customers had not to pay for that. If a company is using cheap material, it is not the consumer's fault. Especially if they sale their products the same price as others that use good material.
I've bought an exhaust in the same price range than others that have no issues, I expect mine to be as good as the others.
Problems can happen, I can understand. But as a good company, you should listen to your customers and find solutions.
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I can see two sides of this argument.
The biggest question is does this corrosion consider a quality problem?
There question can be answer in two folds.
1. Does the corrosion prohibit the unit from functioning or compromise structural integrity?
2. Is the corrosion superficial, thus even though having rust spots are not aesthetically pleasing, it does have affect the performance of the exhaust in a negative manner?
Iron base metal can developed 2 types of surface oxide. One is the traditional iron oxide or rust as an effect of corrosion; another is passivation which metal oxides are formed as a protective layer.
According to material data, it suggests that 409 will corrode which forms iron oxide, but the iron oxide does not propagate. In this case, unlike traditional iron oxide development, 409SS iron oxide does not grow to significant size where it starts to flake off thus reducing the original material’s mass. This is type of corrosion are called superficial rust which exhibits light discoloring and pitting.
To answer question 1, here is how you can approach the matter.
Though the 409 SS surface rust does not appear to be growing, the rust developed from wield joint area does not follow the same corrosion pattern as iron oxide formulation on plane 409SS. As a result, the long term stability of this rust development in the wielded area is questionable. Further assurance is needed from manufactures to guarantee that there is not a deficiency in the design where corrosion in that area will not penetrate for the life of the unit.
To answer question 2 here is how you can approach the matter.
Though the 409 SS surface rust appears to be superficial, the manufacture has purposely omitted the discloser of this information from the advertising material. While only advertising the usage of 304 SS, the manufacture have mislead the consumer into believing the rest of the exhaust exhibit the same corrosion inhibiting properties as of 304SS. As a result, the manufacture may have violated the FTC regulation of truth in advertising and marketing.
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What makes an advertisement deceptive?
According to the FTC's Deception Policy Statement, an ad is deceptive if it contains a statement - or omits information - that:- Is likely to mislead consumers acting reasonably under the circumstances; and
- Is "material" - that is, important to a consumer's decision to buy or use the product.
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http://business.ftc.gov/documents/bu...small-business