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The Terminator
Engine/Tuning
With 21 pounds of boost on 93 octane tune, should I...
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<blockquote data-quote="nooner" data-source="post: 11444110" data-attributes="member: 101093"><p>I have heard the Roush side exhaust were restrictive but I didn't think it was THAT restrictive. But it does seem to bear out since with stock pullies I was pushing a little over 9 PSI.</p><p></p><p>In the coming days I hope to be able to determine if the restriction is the side exhaust, and if so, how much is the mufflers, and how much is the 120 degree bend coming out of the mufflers to the side. Spintech makes the same mufflers with 3" inlet/outlet and I can switch to an oval pipe out to the side that is equivalent to a 3" pipe, but the exhaust tips are not available in any other size so I'm not sure if upgrading the mufflers and outlet pipe would help.</p></blockquote><p></p>
[QUOTE="nooner, post: 11444110, member: 101093"] I have heard the Roush side exhaust were restrictive but I didn't think it was THAT restrictive. But it does seem to bear out since with stock pullies I was pushing a little over 9 PSI. In the coming days I hope to be able to determine if the restriction is the side exhaust, and if so, how much is the mufflers, and how much is the 120 degree bend coming out of the mufflers to the side. Spintech makes the same mufflers with 3" inlet/outlet and I can switch to an oval pipe out to the side that is equivalent to a 3" pipe, but the exhaust tips are not available in any other size so I'm not sure if upgrading the mufflers and outlet pipe would help. [/QUOTE]
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With 21 pounds of boost on 93 octane tune, should I...
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