Ask Honest John

Honest John Ask Honest John » Do ECU tunes work?

Do ECU tunes work?

Regarding ECU tune-ups. Do they increase the power/ torque/ mpg as stated? Are they worth the investment?

Asked on 18 September 2012 by jeff1235

Answered by Honest John
Yes they can do. But they disqualify the car's warranty and you have to disclose them to your insurer who will probably double your premium.
Similar questions
I would like to tune my 2004 BMW X3 2.0 diesel, which currently has 150PS. The racing chip will increase torque from 330 to 412Nm and raise output to 192PS. Do you think this will work with the X3?
My Lexus LS diesel has covered 83,000 miles and is trouble free, but my only concern is lack of power and poor economy (30-35 mpg). I'm considering having it re-chipped, would this be a good idea?
I have a 2009 Audi A3 1.9TDIE, can you please advise if this engine is suitable for chipping upgrades such as DTUK or Chipexpress systems? If it is possible which would you recommend or are there other...
Related models
Good to drive. Packed with safety kit including ‘City Safety’ as standard. Geartronic start/stop. New 2.0 Volvo D4 diesel from 2014 under 100g/km CO2.