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Re: De-catting
I just replaced the cat section on my GTV 3.0 V6 with a straight-through decat 2 days ago. It seems more eager at low revs, but idle is less smooth (hope it will settle as ECU relearns). I have standard middle section with 1 silencer and straight-through rear (0 silencers instead of 2) so that car was already pretty noisy. However, with the decat it is much louder and I don't know if I can live with it. I am hoping I have not got a proper seal and a bit of tweaking may help, but I think it is just much much louder.
Weight of the decat is much lower too - I would say at least 4kg less.
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