Rey
Registered Member
This was done on a DYNOmite Dynometer at TPIS in Chaska, MN. This dyno has you jacking the rear, removing wheels and attaching dyno modules to each rear hub. My first run was the best. Unfortunately, forgot to print this run result. Car had numerous power reductions with torque management, but seemed to run best on dyno in 4th gear. 352 RWHP represents an 18% drivetrain loss from 429 engine hp. Nevertheless, I think Hyundai underrates their horsepower. Perhaps removing traction control/esc fuse, etc might change RWHP a bit.
TPIS personnel were dazzled by the smoothness of the drivetrain - absolutely no vibrations, etc. at 150 mph. indicated. This is the smoothest car they have ever observed on dyno.
We also measured fuel mixtures at wide open throttle - about 10-10.5 all across the rpm. This is pig rich. TPIS estimates there are 30 rwhp available with good exhaust.
My intake was stock with K&N filter. I have removed the flap in the intake air box interior, and also removed a similar flap on the secondary intake, which is located near the radiator center. My intake noise is considerably louder at wide open throttle, but stone quiet at cruise. I have experimented extensively with a cone filter and may go back to it.
For exhaust, I have the aft cat delete pipes, which I intend to install soon. I had a complete Magnaflow exhaust on my 2011, which droned. Stopped the drone by installing Dynomax VT mufflers. I am thinking of having an exhaust system made from resonator aft to eliminate the rear mufflers. It will be tricky to install the Dynomax mufflers (I can't stand exhaust drone). I will not pop for Magnaflow or even Borla systems. I think much of the gain from these systems can be obtained at a fraction of the cost through a custom rear muffler change.
The car cries for long tube headers, but I fear no mfg will ever produce a set. The market is just too small.
TPIS personnel were dazzled by the smoothness of the drivetrain - absolutely no vibrations, etc. at 150 mph. indicated. This is the smoothest car they have ever observed on dyno.
We also measured fuel mixtures at wide open throttle - about 10-10.5 all across the rpm. This is pig rich. TPIS estimates there are 30 rwhp available with good exhaust.
My intake was stock with K&N filter. I have removed the flap in the intake air box interior, and also removed a similar flap on the secondary intake, which is located near the radiator center. My intake noise is considerably louder at wide open throttle, but stone quiet at cruise. I have experimented extensively with a cone filter and may go back to it.
For exhaust, I have the aft cat delete pipes, which I intend to install soon. I had a complete Magnaflow exhaust on my 2011, which droned. Stopped the drone by installing Dynomax VT mufflers. I am thinking of having an exhaust system made from resonator aft to eliminate the rear mufflers. It will be tricky to install the Dynomax mufflers (I can't stand exhaust drone). I will not pop for Magnaflow or even Borla systems. I think much of the gain from these systems can be obtained at a fraction of the cost through a custom rear muffler change.
The car cries for long tube headers, but I fear no mfg will ever produce a set. The market is just too small.
