Uploaded August 2026 | Updated September 2026, 1 week ago
Turbo A/R Test. .48 vs .63 on a T04E-46 turbo. The test was run on a modified 2.0L Zetec motor in my 2008 Ford Focus (for my book on Focus Performance). The tighter A/R improved torque production on the 2.0L by 50 lbs-ft. This was an impressive gain given that it was only making 100 lbs-ft at 3000 rpm! The bigger A/R will make more peak power. As always, You choose! If you have comments or questions, make sure to join the nightly live feed that includes tech and 45 mins of Q&A-bring your build questions. Make sure to check out the new turbos (and sale pricing) @richardholdenerperformance We have another new turbo (are you listening 6.0L guys)? We have a super responsive, super powerful option for the bigger 6.0L guys. No one else has this turbo! We also have cams, lifters, springs, injectors (50 pound to 1600 cc), pumps, tunes, dod delete kits etc…Also check out @briantooleyracing @afr_heads @scatcrankshafts @vortechsuperchargers #turbo #boost #junkyard #ls
Turbo A/R Test. .48 vs .63 on a T04E-46 turbo. The test was run on a modified 2.0L Zetec motor in my 2008 Ford Focus (for my book on Focus Performance). The tighter A/R improved torque production on the 2.0L by 50 lbs-ft. This was an impressive gain given that it was only making 100 lbs-ft at 3000 rpm! The bigger A/R will make more peak power. As always, You choose! If you have comments or questions, make sure to join the nightly live feed that includes tech and 45 mins of Q&A-bring your build questions. Make sure to check out the new turbos (and sale pricing) @richardholdenerperformance We have another new turbo (are you listening 6.0L guys)? We have a super responsive, super powerful option for the bigger 6.0L guys. No one else has this turbo! We also have cams, lifters, springs, injectors (50 pound to 1600 cc), pumps, tunes, dod delete kits etc…Also check out @briantooleyracing @afr_heads @scatcrankshafts @vortechsuperchargers #turbo #boost #junkyard #ls
