I bought catless exhaust and dawes dewices. When I installed exhaust, the iddle run is very poor and sometimes engine switched off. Because my bleed (from digit power) doesn work with exhaust (pressure 1,6 bar) I bought dawes devices (racing version). I must cut some pipes. On the photo you will se which pipes. But problem with iddling is now bigger (on the 1200 rpm engine runs very well). Somebody told me that some of the pipe is especially for idling. I dont know but im sure that i didnt mistake........, because dawes has two ends and standard piping has 3 ends (to solenoid etc. My instalation is here. Please need help, my travelling through the city is bloody nightmare.........

http://www.volny.cz/petra.hrubago/dawes.jpg