SteedaJohn

We recently tuned a 2013 GT500 here at Steeda Autosports whose only modifications included a 10% overdrive pulley, Kooks Long Tube header system with high flow cats, and a touch of our custom dyno tuning.

The difference? An additional 96.7 horsepower and 90.34 ft/lbs of torque at the wheels!

Needless to say, this car is now much more fun to drive! While the peak to peak torque gain is 90 ft/lbs, from 4600rpm to 6200rpm the torque difference is well over 100 ft/lbs through that particular range!

siggyfreud

Sounds great! Would love to see the dyno sheet to see the stock/aftermarket curves.

eolson

So now the car only has about 775HP. Awesome... Please explain your solution to fitting wider rubber on the car, as well as your watts link and your x brace solution with other stiffening goodies to get the lateral G's with the figure 8 and slalom to improve. Also break cooling ducts or or directed air flow kits.

Could we see a Steeda solution to improve the suspension, chassis stiffening tire width, and break cooling please. Thanks, Erik

SteedaGus

Here is the dyno sheet

SteedaGus

The basis suspension underneath with a few exceptions is the same as previous GT500's. The one big exception is the optional electronically adjustable shocks and struts.

If you have the standard shocks and struts our Tokico D-specs combined with our GT500 specific springs are a great upgrade. Our GT500 springs will only lower a 13 about 2/3 of an inch in the front and 3/4 in the rear. Ride quality will hardly change but handling will improve noticeably due to the higher spring rates.

This picture will give you an idea of the ride height on a 2013 GT500 with our springs.