Revisiting the NA-Cons

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Catch up with Cons’ last visit here.  This time the NA is sporting new looks with the addition of a J-Spec bumper and fresh paint.  A Selin Dual POP was added, we installed headers, SZ Sport Street TT, SZ Flywheel TT, and some high flow cat pipes.  Once we were done with the installs we put the Z on the dyno.  We got a good baseline of what the mods would do to the powerband.

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You’ll see the 3 runs pictured above.  The blue run was our baseline after installing all the new mods.  The NA lost power and torque up until 4600 RPMs (green run).  Goes to show you that throwing on some parts won’t make for a desirable outcome sometimes.  The blue run was from his last visit (from the link above).  We went to work tuning the Z with its new mods and we picked up power and torque just about everywhere with substantial gains above 5000 RPMs.  On the cursor you can see a gain of almost 30 whp and 20+ torque.  Not bad!

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