1rotty 40 Report post Posted June 9, 2008 I'd like to get my 98 540 sounding a bit gruntier.Any suggestions for a relatively inexpensive mod would be appreciated.Are there any pitfalls.I'd really like to bring twin pipes out both sides.The existing system is in excellent nick. Quote Share this post Link to post Share on other sites
jochen 4 Report post Posted June 9, 2008 I'd like to get my 98 540 sounding a bit gruntier.Any suggestions for a relatively inexpensive mod would be appreciated.Are there any pitfalls.I'd really like to bring twin pipes out both sides.The existing system is in excellent nick. Pitfalls: 1. Cost 2. You will always loose something (money + increased noise level = both negatives in my opinion) 3. New exhaust noise level laws - check them carefully. Quote Share this post Link to post Share on other sites
cainchapman 0 Report post Posted June 9, 2008 Use you existing muffler, cut it open and get someone to rebuild it internally. Get it welded up nicely. Then you won't get nailed by the new Audible exhaust laws. Quote Share this post Link to post Share on other sites
Sick Puppy 1 Report post Posted June 9, 2008 (edited) Use you existing muffler, cut it open and get someone to rebuild it internally. Get it welded up nicely. Then you won't get nailed by the new Audible exhaust laws. Now I haven't got a Beemer (yet!), but how difficult is this? I mean I imagine the welding is pretty straightforward (well, for a welder anyway lol), but what about the interior bits- piping, fibreglass etc? I was thinking of getting this done to my car- Coby headers, modified cat and bigger exhaust pipes with the muffler interior hollowed out, but when I saw the pics of the inside of different mufflers, it made me wonder whether the cost of getting the muffler done would exceed the cost of getting a new muffler instead! Edited June 9, 2008 by Sick Puppy Quote Share this post Link to post Share on other sites