Its has been proven that the results are often just completely meaningless wether that means too high or low im not qualified to say thats for the experts but rest assured your 167t will not do for PI PIF testing.
I have a Liteon SOHD-167T and would like to use it for scanning as i don't own a Liteon burner
I just hope you didnt buy this for PI PIF testing, because it aint going to happen
Could they at least be used to get a GENERAL (if not 100% exact) idea about disc quality ?
Run a Nero CD Speed transfer rate test and if your drive reads it without a glitch or serious drop in read speed be happy :), or open your wallet and get a DVD-RW capable of PI PIF testing.