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SportTrac Discussion
Engine & Drivetrain
performance exhaust any ideas?
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<blockquote data-quote="Johnny O" data-source="post: 1000713" data-attributes="member: 61743"><p>As long as the O2 sensors are in about the same place as stock I don't see why it would cause a problem.</p><p></p><p>It has been said here that the Random Technology Y-Pipe that eliminates the two smaller pre-cats right below the manifolds will still pass emissions and not throw a code as long as you leave the bigger single cat in place (or replace it with a hi-flow cat).</p><p></p><p>Realistically a 4.0 doesn't flow that much air that it needs true duals, actually you'll probably lose torque, plus if your Trac is a 4x4 then you're not getting another pipe on the other side of the transfer case anyway.</p></blockquote><p></p>
[QUOTE="Johnny O, post: 1000713, member: 61743"] As long as the O2 sensors are in about the same place as stock I don't see why it would cause a problem. It has been said here that the Random Technology Y-Pipe that eliminates the two smaller pre-cats right below the manifolds will still pass emissions and not throw a code as long as you leave the bigger single cat in place (or replace it with a hi-flow cat). Realistically a 4.0 doesn't flow that much air that it needs true duals, actually you'll probably lose torque, plus if your Trac is a 4x4 then you're not getting another pipe on the other side of the transfer case anyway. [/QUOTE]
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SportTrac Discussion
Engine & Drivetrain
performance exhaust any ideas?
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