Join Date: Sep 2004
Location: Milwaukee, WI
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It doesn't make sense. But that's emissions for you. Same reason EGR routes 1500 degree exhaust gases back in to the intake.
If mfg's wanted to make the most powerful and efficient engines from the factory, they'd all have CAI's with no resonators, no EGR, 160 degree thermostats, oil coolers, piston oil squirters, high flow cats, long tube headers, true dual exhausts, electric water pumps, electric power steering, direct injection, and variable valve timing on both cams.
I apologize to the OP for taking this somewhat off topic.
Last edited by ButtonPuncher; 01-25-2013 at 10:24 PM.