hiya guys wondering if anyone can help i have recently had my stage 2 remap at rtech but the car since seems to be accelerating gets to about 3k and u can hear the dv dump air for a millisecond and thenm picks back up and does it again this is only under part throttle seems fine when its under hard acceleration is also running very rough from cold does anybody have any ideas what is causing this is it the stage 2 at fault???? havent had the car scanned yet and its about major service time as i dont cover alot of miles but any help sorting this would be much appreciated

Sounds like its surging to me

A throttle body clean\adaptation often works wonders for a rough idle.

Not sure if would have any affect on your part throttle troubles though.