Project Coyote Swap: Dyno Day

Posted 6/11/2013 by Jonathan McDonald

See how much horsepower and torque our 1997 Mustang Cobra Project: Coyote Swap makes on the dyno!

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For me, dyno days are always very stressful. There is a never-ending list of things that could go wrong running through my head. On top of that, what if the car doesn't make the power you'd hoped? No one likes that letdown. All this was running through my head as we made the trip down to Central Texas Performance with Project: Coyote Swap.

Once we arrived and unloaded the car, it was only minutes before the CTP crew had the Mustang strapped down to their dyno. After a quick run to warm the fluids, a baseline pull was made. On the FRPP Control Pack tune and air inlet, she put down 420 horsepower and 408 lbft torque. To say we were impressed is an understatement!

We swapped out the air inlet for a JLT cold air kit and Jeff loaded a preliminary custom tune using an SCT 3015 handheld tuner. After a few more pulls and some tweaks to the tune, we had our final numbers. There was much whooping, hollering, and high fives going on once we looked at the screen. 447.4 horsepower and 411.5 lbft torque!!!

Right now you are probably raising the BS flag. 2011+ Mustangs don't even come close to those numbers with the same mods. You're right, but we also arent working with a 2011+ Mustang. The entire drivetrain is lighter and therefore easier to turn, reducing parasitic loss. We have a billet flywheel, Tremec 3550 5-speed transmission, FRPP aluminum driveshaft, 28-spline 8.8 rear with 3.55 gears, and a 17" wheel with a 26" tall race tire. Everything is smaller and lighter. The dyno we were on was a Dynocom and all pulls were done in 4th gear (1:1).

I'll leave you to make your own decisions from here. For us, we know the dyno is nothing more than a tuning tool and the real performance test will be on track. Stay tuned as we will be putting Project: Coyote Swap through the ringer on several road courses in the very near future!!

Thinking about a 5.0L Coyote Engine Conversion?

Click here to see the Mustang Coyote Engine Swap Build!