2015 mustang gt roush super charged

Rukkus87

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Apr 29, 2019
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Looking for some advice - recently had my 15 gt tuned on the dyno .
Rough stage 1
Bbk catless headers
mt-82
Torque numbers seems low . It’s my daily so I didn’t want to push it but I am putting down n/a torque numbers. Car drives great and hauls higher in the rpm range but I wanted someone with experience to take a look . Thoughts?
 

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Noobz347

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That graph is not right.

You're missing about 100 ft.lbs of torque and that's the weakest torque curve I've seen for a positive displacement supercharger, yet.

Your HP numbers look to be in the ballpark but that torque figure is def off.
 

Rukkus87

New Member
Apr 29, 2019
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I agree . I’ve seen multiple graphs of similar supercharged mustangs making 450-500 ft/lbs . I thought maybe the dyno was conservative. My baseline on the Canned roush tune was embarrassing . It made 400 hp and just under 340 ft/lbs - granted I had headers installed before we did the baseline so it wasn’t tuned for them .

Now to figure out why the numbers are so low .
 
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