Something odd? (OTR + LS1)

[soop]

Just put an OTR on an SS.
Starts and runs fine. Drives fine.

Had a pre-existing CEL due to a dodgy 02 sensor anyway.
What are the normal symptoms to expect when fitting an OTR to an untuned car?

[Vt_vic]

are you still running the maf?

[soop]

Nah I wasnt.
took it for a drive and it run a bit rich but other then that Nothing notable. Put it back the way it was anyway.