Updated exhaust setup

[z31maniac]

Interesting a bunch of the stuff I read said the 535 mounts need shimmed and the m5 doesn't. Either way glad the headers fit!

[e30polak]

Interesting a bunch of the stuff I read said the 535 mounts need shimmed and the m5 doesn't. Either way glad the headers fit!

I don't know mang, it worked for me...

[SamE30e]

It is the headers for sure. But I got it to a point where I like it. The rasp adds to the aggressive tone. ;)

I like a little bit of rasp, always adds a nice touch.

[e30polak]

I like a little bit of rasp, always adds a nice touch.

Ya, a little bit of rasp makes an exhaust note sound mean. :twisted:

Too much rasp makes it sound like doo doo...

[JRKOUPE]

They aren't. The 535 mounts need to be shimmed in almost every install.

I just wanted to make sure he didn't have to shim M5 mounts since that's what I purchased for my upcoming S52 swap.

where did you source the m5 mounts.. I see they are like 100 total..... for rt and lt?.....

[JRKOUPE]

headers...

Curious.....

.why did you guys choose headers over the ss obd2 ex mani's?...


here is a vid of a 2.5 single on an M20...w/ headers...MF hi flow cat.and borla muffler....would you call it raspy?.or not?.

[z31maniac]

where did you source the m5 mounts.. I see they are like 100 total..... for rt and lt?.....

I bought them and my THR adapter from a fellow BMWMOFO member here in OK.

[JRKOUPE]

I bought them and my THR adapter from a fellow BMWMOFO member here in OK.

gotcha....

[SamE30e]

Interesting a bunch of the stuff I read said the 535 mounts need shimmed and the m5 doesn't. Either way glad the headers fit!

I have 535 mounts and my ebay headers fit without it shimmed, but they touched the heat sheild, I shimmed it and they fit mint. And there is enough room that I didn't have to shave my intake manifold or nothing.

[e30polak]

I have 535 mounts and my ebay headers fit without it shimmed, but they touched the heat sheild, I shimmed it and they fit mint. And there is enough room that I didn't have to shave my intake manifold or nothing.

Same thing for me. I flattened the heat shield on the body after seeing that they touched.

[e30polak]

Curious.....

.why did you guys choose headers over the ss obd2 ex mani's?...


here is a vid of a 2.5 single on an M20...w/ headers...MF hi flow cat.and borla muffler....would you call it raspy?.or not?.

A little raspy, but that's the character of BMW's inline 6 engines! That car sounds quite good actually!

[evil_twin]

With that muffler, how did you get it so it doesn't swing around that much? Where did you mount the hangers?

[nando]

The one thing about the Vibrant is that it by itself is LOUD! I ran a straight through resonator before the borla, and it was pretty obnoxious.

what type/length resonator did you use? think it would be any louder with a resonator/cat/vibrant muffler? you get any fuel smells at idle? I like these because they look and sound pretty good and come in the size i want. plus they're cheap. :p

[johnjohnsons54]

I'm considering going from my shorty headers -->2.5in pipe---->a cheap cat (suggestions?)--->borla----->vibrant dual outlet

Can anybody suggest the ideal Borla, and Vibrant models for such a project...not sure about muffler lengths and offsets etc?

I'm assuming a good shop should be able to tuck all of these pieces neatly underneath the car.

I'm thinking it should be pretty similar to Polak's but with a little less volume and rasp due to the cat.

[Jand3rson]

I'm using a 2.5" single in/out Borla ProXS, and a single 2.5" in Vibrant StreetPower. My headers are ceramic coated ebay Supersprint reps with a Flowmaster 2-into-1 Y. The whole header/Y assembly is ceramic coated, and I have NO rasp whatsoever. Perfectly quiet at idle, and loud when you get on it, but it sounds amazing while out just cruising around. And when you stand on it, it sounds SO MEAN. I do get some crackling/popping when I rev-match, but other than that, it's really perfect. Tucked up in there nice and tight, too.

Here's a couple shots of the headers:




And here's the completed system welded up under the car: