get the emulator/advancer installed
i have the same car and does around 170-190 ...depends upon driving
local 90-110 with a/c ..
local 130-170 without a/c
it depends upon a lot on how u drive....on normal driving its good...on constant hard accelerations the mileage drops drastically
get the cng tuned up, change air filter and make sure the housing is properly in place...then check for the area where excess air is blocked via tapping the pipe from inside....
you can do it yourself...you see the air filter box and pipe attached with it..take off the pipe and ul see the tape...cover the pipe with tape..25-30% of diametre
the drive it a little...after a few glitches in acceleration it should work just fine:)
what i have noticed is...the moment when ur car becomes most reponsive..leave the settings there...and dont pull it on gears...change them before 3000rpm ..running will be still great and so will be the economy