In a desire to break the record, coming back even faster (8)
I believe the answer is:
speedier
'faster' is the definition.
('speedy' can be similar in meaning to 'fast')
'in a desire to break the record coming back' is the wordplay.
'in' indicates putting letters inside.
'to break' is an anagram indicator.
'the record' becomes 'EP' (abbreviation for extended play record).
'coming back' is a reversal indicator.
'ep' written backwards gives 'pe'.
'desire' with letters rearranged gives 'sedier'.
'sedier' placed around 'pe' is 'SPEEDIER'.
'even' acts as a link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for speedier that I've seen before include "Quicker" , "More rapid" .)