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Senior Member
Carroll Shelby
Yes on stock y pipe, my "restrictor" pipes are simply what connect the manifolds to the y pipe in place of the cats.
Downstream of the y pipe is a 3" pipe and dynomax straight muffler.
I need to pull up.my old dyno to compare the curves.
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Senior Member
Carroll Shelby
Comparing my charts it did not nose down any further up top; same peak HP at the same RPM. I just gained more lower range torque and the it looks like the peak torque number is a few hundred RPM earlier.
Same HP at the same peak RPM, just more torque and earlier/lower in the range.
Remember, it wasn't JUST the pipes, I took out some intake restrictor and also did run thicker gear lube this time for more protection.
Last edited by Pranav; 01-22-2018 at 03:10 AM.
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