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Not sure what to expect when I installed this device, I drive a lot, iro 40k per year, so I thought I'd try one of these. Fitted in about 10 minutes all neat and tidy, leaving on default off I went to work. Noticing lower down torque at once, gear changes were smoother too? I have also seen an improvement in mpg, how much it's difficult to say, I intend to to do a brim to brim fill sometime soon then I will definitely know.
Verified purchase: Yes | Condition: New
Extremely happy and pleasantly surprised. It makes a noticeable difference and no black smoke! Thank you. At this stage can't say about mpg
Verified purchase: Yes | Condition: New
Used on an Q5 2010. Easy to fit. No problems using and visibly improved performance depending on setting. I am changing cars and again will go for one with the next model.
Verified purchase: Yes | Condition: New
Worked as described with no adverse effects - instant power increase!
Verified purchase: Yes | Condition: New
Great product did upgrade to better version fantasy
Verified purchase: Yes | Condition: New