I have finally installed a straight pipe on my 1997 BMW 540iA.
I removed everything past where the cats combine and replaced it with a stainless steel pipe that is welded on.
Time: 30-45 minutes
Tools: Hacksaw / Chain Wrench (cutter) / Sawzall / Angle Grinder Optional: Welder
Other Materials: 2.5in id pipe, turndown, a small amount of brain power, and exhaust clamps
Procedure:
1. Put car up on stands
2. Place jack under the Y res so you don't die when it falls (they are heavy)
3. Cut off everything in between where the post-cat pipes combine and the resonator pipe separates to enter the res
4. Remove hangers
5. Attach replacement pipe
The Drone: Aye, its there, but only when accelerating and it disappears once your cruising. It's not deafening, but it is their. Mom still doesn't complain though and she likes the exhaust cause she thinks she is showing off or something to her friends...
Sound: It is deeper and throatier but most of all it is glorious. You can tell people you have a V10 and they would believe you when you are high up in the RPM range. IT has to be the most refined and best sounding V8s out there in a car under 100k. The sound is loud, and you may wake people up on cold, early mornings.
Video:
I will update this later more and more when I do some more things with my exhaust. If anyone else has any straight pipe or exhaust mod clips from a 540i ONLY, post them down under. Let's make this another good resource for those that are interested in the mod.
I removed everything past where the cats combine and replaced it with a stainless steel pipe that is welded on.
Time: 30-45 minutes
Tools: Hacksaw / Chain Wrench (cutter) / Sawzall / Angle Grinder Optional: Welder
Other Materials: 2.5in id pipe, turndown, a small amount of brain power, and exhaust clamps
Procedure:
1. Put car up on stands
2. Place jack under the Y res so you don't die when it falls (they are heavy)
3. Cut off everything in between where the post-cat pipes combine and the resonator pipe separates to enter the res
4. Remove hangers
5. Attach replacement pipe
The Drone: Aye, its there, but only when accelerating and it disappears once your cruising. It's not deafening, but it is their. Mom still doesn't complain though and she likes the exhaust cause she thinks she is showing off or something to her friends...
Sound: It is deeper and throatier but most of all it is glorious. You can tell people you have a V10 and they would believe you when you are high up in the RPM range. IT has to be the most refined and best sounding V8s out there in a car under 100k. The sound is loud, and you may wake people up on cold, early mornings.
Video:
I will update this later more and more when I do some more things with my exhaust. If anyone else has any straight pipe or exhaust mod clips from a 540i ONLY, post them down under. Let's make this another good resource for those that are interested in the mod.
BMW 540i Cat-Back Straight Pipe
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