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Mustang Forums
2011-2014 Mustangs
2011-2014 Mustang Talk
LT and Ford Racing 90 MM TB?
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<blockquote data-quote="JimIII@jdm" data-source="post: 13121709" data-attributes="member: 10902"><p>Okay, having 1 7/8 is probably the reason for your big torque loss. Those primaries are better suited for higher power applications. We usually dont use 1 7/8 untill over 700 RWHP. The 1 3/4" primaries are better for keeping a healthy torque curve. Im sure if feels really good up in the higher RPM band because at WOT the manifold, TB and Longtubes together will move a ton of air. Removing all that back pressure from adding this large of a diameter exhaust will create your sound loss.</p><p></p><p>I really like the 84.5mm TB. The 90mm creates a wall at the manifold and will not add any more flow than the 84.5mm will. The Boss manifold has an 84.5mm opening so your better off matching the size of the inlet. </p><p></p><p>If you have any questions feel free to contact me at 732-780-0770 during our office hours or email me at <a href="mailto:Tech@teamjdm.com">Tech@teamjdm.com</a>!</p><p></p><p>Thanks,</p><p></p><p>JimIII</p></blockquote><p></p>
[QUOTE="JimIII@jdm, post: 13121709, member: 10902"] Okay, having 1 7/8 is probably the reason for your big torque loss. Those primaries are better suited for higher power applications. We usually dont use 1 7/8 untill over 700 RWHP. The 1 3/4" primaries are better for keeping a healthy torque curve. Im sure if feels really good up in the higher RPM band because at WOT the manifold, TB and Longtubes together will move a ton of air. Removing all that back pressure from adding this large of a diameter exhaust will create your sound loss. I really like the 84.5mm TB. The 90mm creates a wall at the manifold and will not add any more flow than the 84.5mm will. The Boss manifold has an 84.5mm opening so your better off matching the size of the inlet. If you have any questions feel free to contact me at 732-780-0770 during our office hours or email me at [email]Tech@teamjdm.com[/email]! Thanks, JimIII [/QUOTE]
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2011-2014 Mustang Talk
LT and Ford Racing 90 MM TB?
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