I have decided to take the pipes off and reinstall the stock cats.... the sound to me is horrible at 3-4k revs... it sounds like a civic or something the rasp is overbearing...

I feel so **** as i had to spend $740 for pipes and shipping :(.... it honestly doesnt sound nice at all... there is no roar or grunt just Rasp :(...

Do u guys think by changing my back box i'll resolve this ????

backbox?

I think going to stock cats will get rid of the noise, but it will cost you some power.

As for your feeling of loss of power. You either have bad leaks or what youre feeling is a slight loss in torque.

hey just wondering did u install ur fang and top cover on ur own? and if u did do u mind sharing with me how u did it cuz i cant find a diy for it thx

Quick Update on MY car is........

I have sold my car!. Yup thats right!...

I lost around $5000 on the price i paid for the car initially...
I have already placed an order on a 2010 N55 135i Coupe and i expecting delivery on 30th June 2010. I decided to swap over as i was not driving the car as often as i would have like due to carrying several passengers around constantly and with the altitude here the power loss is so significant compared to the almost no loss of the turbo'd 135i.

so thats my story and the end of my thread i will post a picture of my new car once i get it....