I also remember trying to explain to the guys that you loss allot more energy through a tubular manifold because of the increase length over the stock unit and this energy is no longer driving you Turbocharger so after some discussion the people needed dyno proof that I couldn’t provided
Well anyway now I can
How It Works: Wrapping a turbine and turbo manifold with insulating material decreases the amount of heat energy radiated from them, forcing more to pass through the turbine. Hot gasses are expansive, and directing more heat through a turbine wheel will cause it to spin faster, increasing spool and power production.
How It Was Tested: Carter's SR-swapped '91 240SX was driven to G-Dimension in City of Industry, Calif., where resident Nissan guru Stephen Rhim strapped it to the Dynojet in preparation for baseline runs while I fit Auto Meter probes underhood, monitoring temperature in three key locations above the manifold and turbo. After starting the car cold and allowing it to idle to maximum temperature, three pulls were made to establish an average baseline power number, while maximum underhood temperatures were tracked along the way. After wrapping the manifold with Thermo-Tec's exhaust wrap and the S14 GT2560's turbine in turbo insulating material, the test was repeated and final numbers were documented.
What It Delivered: Compared to baseline power and temperature numbers, installing the Thermo-Tec products increased power output by 10.7 whp and 12.6 lb-ft of torque, and dropped underhood temperatures by 30 degrees.
10.7 whp and 12.6 lb-ft of torque This is a damn nice gain for just taking the time to wrap your manifold
Thank import tuner
