power loss, wont go above 5k when in gear
 

i have a 04 192 rx8 i love every second of driving it but have recently been plagued with problems which means it hasnt really been out for the last 2 months. it started with having to have a new cat, ignition coils, battery, plugs and maf sensor which wasnt cheap in total over £1600 with labour after a lot of searching. however after about 5 days of getting my car back from the dealer after having the ignition coils replaced the power started to drop rapidly now it wont go above about 5k in gear and 6k in neutral, it starts with a blip at about 3k then feels like the engine is fighting against itself all the way up before topping out as stated before.

can anybody shed a bit of light on this?!!

liam
suffolk uk

ps does anybody know any specialists apart from the dealer near ipswich?