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Hey all, so i have a 2005 Volvo S40 2.4i, I am looking into upgrading my exhaust and making it myself with all the proper materials. Specifically a 3" exhaust. But i cant find any headers?! Do they not make any for this model? Second question is, does anyone know the outlet size of the exhaust manifold? So i can get the proper adaptor if necessary? any thoughts or answers??

thanks.
 

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Make sure your upgrades are part of a planned conversion.

Just putting on a 3" exhaust will probably only make it noisier. Too large a pipe for the volume of air expelled by the engine will actually slow the speed of the flow and not properly scavenge the exhaust-you will loose power.

Research, research, research, then spend.

Here's some good research material;
Swedespeed Forums - RT Mechanics Volvo Specialist Demo car
 
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