Full build up info on 4.6l stroked to 5.0l,fitting of supercharger then tuned on rolling road at UK based John Sleath race cars ltd, go to www.john-sleath.com for more info

Part 2. Dyno of the 2011 GT500 with Mods

Same morning as for my Testarossa. The mustang was the first car in the morning – impressive

This video was uploaded from an Android phone.

Mike Carroll’s Saleen Dyno Pull

Modificatons include Intercooled D1SC Procharger Kit with Forged Internals. 580 RWHP!

This video was uploaded from my Android phone. Up to 720p for your viewing pleasure. Taken at Supertune Performance in Stilwell, KS on January 31st, 2011. Dyno proven 281RWHP with 301.5lb/ft of torque on 91 octane. Only mods on car for this run are a K&N CAI and FlowMaster mufflers. Supertune 913-814-7243 www.supertuneracing.com

The Tuner School students did a custom intercooled Vortech supercharger system and made 342 RWHP and 338 FT LBS with long tubes and 3 inch x-pipe.

Mustang Boss 302 Dyno test at the auto show 2011.