Have you read the conditions on the warranty. Like most car warranties they aren't worth the paper they are written on most of the time. There are so many exclusions and get out clauses it's almost impossible to claim.
https://www.racechip.co.uk/chip-tuning/quality-warranty-guarantee.html
click on the Download the conditions PDF and have a read.
You must send the completed warranty certificate by post to the Warrantor, at the address set
out below, within 14 days of the date you received the warranty certificate:
Failure to send the completed, dated and signed warranty certificate to the Warrantor within
the 14 day timeframe will
disqualify you from claiming under this Warranty.
1. Subject to the other terms of this Warranty (including, in particular, the Exclusions listed
at Part IV below), you will only be entitled to claim under this Warranty if ALL of the
following conditions are satisfied:
a. damage is caused to one or more of the engine components and parts set out in the
list in clause II.2 below (a “Qualifying Part”); and
b. the relevant damaged Qualifying Part is installed in or is otherwise part of a Qualifying
Motor Vehicle (as defined in clause II.3 below); and
c. the Qualifying Motor Vehicle is registered in your name; and
d. the damage occurs during the Warranty Period (as set out and defined in Part IV
below); and
e.
the damage occurs as a direct result of the use of an Auxiliary Control Unit.
They can always argue that a failure would have occured anyway if you weren't using the box.
Only motor vehicles which satisfy ALL of the following conditions will qualify for this
Warranty and be considered “Qualifying Motor Vehicles”
Motor vehicles which were first registered not more than 3 years before the date
of purchase of an Auxiliary Control Unit; and
• Motor vehicles with an odometer reading not exceeding 100,000 kilometres
(or 60,000 miles) at the time a Covered Event of Damage occurs; and
So the car needs to be less than 3 years old when the box is fitted and have done less than 60K miles when the failure occurs and needs to have been fully serviced on time.
And they aren't even cheap compared to the price of a decent remap.
