Quote:
Originally Posted by V8munro
I currently have decat pipes but i am tempted to refit my cats but hollowed out and wrapped to try and keep the heat in and stop that annoying wastegate rattle being so loud as it really bugs me.
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I have done this on a few cars and although seems to work well, given the power you have it might be worth doing some flow calculations? Gutting your cats will slow the gas flow as it goes from 2.75" to 5" diameter then back to 2.75" ( I am just guess pipe sizes I have not measured the downpipes) and possible cause back pressure wave (just like a 2 stroke expansion chamber) robbing you of flow and power.
Oh and I will have your downpipes when you sell them
Mine is 2015 so don't think it will have wastegate rattle being electronic control
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