Hi all. Had a new standard exhaust manifold fitted today and had precat removed at the same time. Upon driving home from garage car was fine,driving perfect for about 3 miles then all of sudden started kangarooing and flashing the eml light. Also the traction control light has lit up too which I thought strange. Obviously has something to do with manifold and/or precat,but can't figure out why? I've reset the ecu but same happened again. Soon as engine temp starts to rise car becomes almost impossible to drive. Revs seem to stick at around 1500rpm and misfires too. Car is 2002 coupe. Any ideas would be greatly appreciated,cheers guys.