Quote:
Originally Posted by Ckylesworld
Can someone explain what a catch can if for?
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98% of the time: Arguing on the internet.
1% of the time:
It gives people something to do with their money and feel better about their hot rod ownership experience, provided they don't care about voiding their warranty. They are glad that their GDI engines will have less risk of long term oil buildup on the backsides of their intake valves (which is not an issue on 2015+ LT4 engines).
1% of the time:
For modded cars with higher power who add more boost to an LT4 or add boost to a LT1: it helps reduce intake oil ingestion from blow-by that comes with the added boost. During short trip & cold weather operation it will also catch water and fuel condensate from the crank case that doesn't evaporate (because the engine crank case never reaches normal operating temperature). Downside #1 is the regular check-and-drain maintenance that is required: for winter short trip daily drivers, this can be as often as weekly. For long trip summer driving, it can be as long as quarterly. Downside #2 is that it will void your GM factory warranty (which is already void if you mod the car).
