OK, well my "low end response" version of the CT26 upgrade was fitted to a 1HD-FT spec'd for having an inter heater installed on it (yes, another poorly implemented top mount - this one didnt even have the bonnet holes lining up with the cooler at all....).
SO the trim on this turbo is such that its not all about power, but rather response.
UGOTNUFN on this site did the tune. He had recently tuned a 1HDFT with safari cooler to about the best result I've ever seen last week and the comparison of the two is interesting.
Below is before and after for the 1HD-FT done on an interia dyno - so low end only shows transient response - you can see the huige improvement.
When loaded at 1500rpm, the clutch wouldnt hold, so its more than 550nm @ my estimation. When loaded at 3000rpm, it put down 131rwkW
Dashed line = Before
Solid Line = after
Red = Corrected flywheel torque
Green = power in kW @ wheel
Blue = Corrected flywheel power in kW
Dark Blue - my hand written attempt to show where the low end torque is when loaded up - its prodigous
![Image](http://i1211.photobucket.com/albums/cc435/GTurbos/1HD-FTGTurboCT26topmountbeforeafter.jpg)