Starting, revving and shutting down my aux bridge high compression 6 port turbo RX-7 looking into the mouth of the GT4088R ball bearing turbo. Notice the easy spool and count how many seconds it takes the turbo to stop spinning after the car is shut down. Talk about turbo response! 10 PSI by 3000 RPM at less then 70% throttle.

long, boring video of one of the turbo's blades at idle and revving.

Fiesta RS Turbo GT28 Spool Down

I ported and half polished this cast manifold and sprayed it with a ceramic coating on the inside and on the outside for better thermal insulation. The old 5 bolt flange plate is a nightmare and slows the turbo down way to much, its not the cast collar like everybody thinks is the problem, its the small port that creates back pressure and reduces exhaust velocity.

new injectors and reprogrammed box and southbend clutch to support all power transfer

Dauphin with new fenestron package spools up after accident in Owings Mills MD mid September 2006

Scale OH-58A Spool-up & Hover Test, Logo 24 700mm Flybarless w/HeliCommand

Behind RPM Motorsports' half-bridge 13B-RE race car listening to the exhaust and turbo. The car runs a 13B-RE half bridge with TO4R w/ P-trim 0.96 hotside. From the rear of the car you can hear the turbo wind up as the engine is held around 5000 RPM. Filmed at their grand re-opening.

with a solid camera and better struts/springs camera would be still

RPM Motorsports' 13B-RE half bridge race car revving with camera in the engine bay. Nice turbo spool and compressor surge. Turbo is a TO4R w/ P-trim 0.96 hotside.