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The New S550 2015-2017 Mustang Discussions on the newest generation of the Ford Mustang.
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Old 03-15-2017, 07:54 PM   #11
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Originally Posted by Kyle@ROUSH View Post
Correct, the TVS is a monster out of the hole, as for power we use an industry standard of a 15% drivetrain loss. IE 727 HP kit should be roughly 622 wheel. Phase 1 should come out somewhere in the mid to upper 500's.

What is the boost difference or ratings between the stage 1 and stage 2 roush?

Doesn't the stage 2 void the warranty?

Also, this is my dream car I plan on keeping and then passing on (when I'm gone),
do I want to boost it that much? I don't want to overstress engine/drivetrain parts.
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Old 03-16-2017, 04:35 AM   #12
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Around 8psi on the 85mm, close to 10psi on the 80mm for phase 2. No warranty on phase 2.
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