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Discussion Starter · #1 ·
Came across these digital tuning boxes on ebay the other day, they claim you just plug them straight into your air intake sensor and it will re-map your ECU leading to increase in BHP and fuel economy.

This is an example of what I am talking about:

There are a range of products on ebay claiming to do similar things ranging in price from just £8 to over £250. Just wanted to know if anyone has experiance of using anything like this and could answer the following questions:

1.) Could a product like this really increase BHP/torque/fuel economy?

2.) Could a product like this damage your car?

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