Quote:
Originally Posted by nikitopo
I think we are saying the same thing. Factory puts greater safety limits to protect the engine. If you change these limits and one day you don't get the best quality fuel from a random gas station, then you might have kaboom. The usage of an E85 fuel and of a flexible fuel kit is a good solution, but then you don't get always the same power and not all the tuners have this option.
I don't fully agree. The factory standards are usually much higher comparing to aftermarket products. The reason is that the factory has a multiple years warranty and they have to compensate in a failure. I have not seen yet a header with a quality similar to the one of the factory. Performance and restrictions is one topic, but reliability is another topic. Try to drive your car in water/rain/snow and let's see how many years of abuse an aftermarket header can withstand. Reason is that there is no wrapping ...
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Yes some aftermarket products ( and tunes) are rubbish, like cheap ebay header, it will likely rust and crack in couple of years, but quality header from reputable aftermarket supplier will cost more but better quality and should last similar to oem.
I know of people who have destroyed cats in stock header with stock tune after tracking car, cats overheat and disintergrate, stock cats just not made for prolonged high speed track driving even on stock tune
yes oem products are likely tested far more extensivly than aftermarket, but they only test for expected conditions.
A lot of people that tune or add aftermarket parts drive car outside manufacturers expected conditions, hence they may expect a higher level of failure.
However quality aftermarket additions like catless header, tuning and oil coolers, performace brake pads for example may actually enhance the reliability of the car when driven outside normal conditions, assuming they are quality products.