Originally Posted by ///M Power-Belgium
Good question from you.....
Make the full pipe good fit in between, and weld as fare as possible under the pipe. Don't worry...the perforated pipe was full of holes...so...no problem.
Even the original (oem-pipe )are not welded 100 % under the pipe.....You should... heare the result....
The shop that did mine could not reach "under" the pipe to make a full weld either, but it was solidly in place before closing up and I have had no issues since the project was completed.
I love the sound as well!
2009 M3 E93 Silverstone II over Bamboo: 6MT, Tech, Premium, Cold, Premium Sound, Ipod, 19'' Wheels, OEM Exhaust Mod.