Last month I bought the following 60mm TB delivered to me here in Australia for a $110 clams and it works perfectly.
http://www.aliexpress.com/item/60mm-1556...2392009371.htmlBecause 20% more air is pumped in it moves the torque band a tad higher in the RPM range.
The unbelievable statistic is the computer had my fuel consumption as low as 6 lts per 100klm at 90/95 klm per hour on a trip....... WTF, I had only ever got the car to 6.8 with the 55mm.
Now I have a question...... Is that plastic 'adjustment' screw actually adjustable because you know..... I broke the one on my standard 55mm.
I realize that after a few years with engine heat that plastic rubbish is going to be brittle.
After my near heart attack of breaking it I spend a few days contemplating how to fix and did so but that is another how to thread.