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I have been using the Surbo in my '99 corolla for 4 years and it has never let me down whenever I wanted to overtake others. Just do the "release and step" when the rpm is between 2500-3000 rpm and you will feel your body being pressed against your seat, especially in the first 3 gears.
Recently, I transferred the Surbo setup to my friend's 15 year old Corolla and immediately, my friend told me that he could feel that the accelerator was much lighter during the test drive. As for fuel consumption, I would reckon it is lowered by about 6-8 %.
Once my new car's warranty is over, I will definitely look for Heng to put the Surbo into my new ride. This is really GREAT STUFF for all cars.
Waimeng Wong
Singapore
