I have a weird issue where if your on boost in any gear, low enough to be in the 2.5-3k RPM region. That's either flast out in first or second, or a motorway overtake in 4/5th. As soon as the RPM hits around 2.5k it completely bogs down to the point you can feel your loosing power, it then hits over 3k and it pick up again?!
This was happening prior to me installing a FMIC. There is NO boost leaks this was tested in a garage last night. What are my options? Look at plugs? Still relativity new on these engines so advice would be great!
Lewis