Running rough after new exhaust install

[pauljames90]

Hi guys having a bit of a dilemma atm, basically I had my new cobra exhaust install last Monday and had 5 days of pure delight with the car running and sounding fantastic, then on the fifth night I came to drive home from work and I noticed straight away the car sounded different with no nice deep growl but just a weak sound similar to what the standard exhaust sounded like. It seems to be hesitant at rev'ing and I seem to be getting quite abit of mechanical noise at low revs.

Any ideas what could be the issue or any ways of finding out what it could be?

[a2orry]

Getting a new exhaust fitted shouldn't change the way it runs. Im assuming that you have the cats still in place more reason for exhaust not to be the problem .I would get it checked out asap if you can hear mechanical noise .problem is will you make it worse driving to the garage .

[pauljames90]

In a strange way the car drives absolutely fine and, at low revs there's a rasp that sounds like a leak in the system and when you turn the engine off there's a rattle that dies with the engine

[pauljames90]

Did an ecu reset this morning and the eml sequence flashes 10 slow as it should then 10 fast, 10 fast and 10 fast again followed by the 10 slow to finish, any ideas how to match this to a code?

[jayrishi]

I seem to be having the same problem, some times you get that deep growl other times sounds different. Let me know if you get to the bottom of it