Thread: mazda RX8 Power loss?

My 2003 RX8 53000 miles has just had pipes replaced under goodwill warranty at Mazda due to an engine oil leak. I thought that was good of Mazda. But they phoned me today to say the car will not do over 10mph as I was meant to collect it today. They say they will look at it but it will not be covered under warranty or a goodwill warranty. Has anyone any ideas what could be causing such severe power loss? clogging catalytic converter perhaps?
It has just been serviced. new oil, brakes, plugs etc

try giving it a full service and then clean out the exhaustt