I am looking at the above 4 for a tuning module for my 1.0 TSI Octavia MK3. Prices vary for their respective units and all offer different power increases. Whilst this is a factor, I'm more concerned about getting a good, reliable unit with good customer care than outright headline grabbing performance figures. RaceChip are currently offering £100 off the model I'm interested, which does offer the biggest increases of the 4. I understand re-mapping is an option, but that's not something I'm looking at right now. Does anyone have any first hand experience with 2 or more (for comparison purposes) of these suppliers?

Edited 20 July, 20187 yr by netman82

Had a Bluespark pro on a previous Volvo S60 D5 and rated it. Lots of adjustment with different maps to find one to suit your driving style.

Best device will be the one that adjusts/ monitors multiple channels - maf for boost pressure, fuel rail, rpm sensor....just need to compare the devices!!!