6 cyl exhaust?

[campaiar]

My solution.

S52 stock headers.

M3 ODBII Mid-pipe:


Into a Y-Pipe (Clamps were temporary. Has been welded to aviod leakage.):


BMW Single Pipe catback (Showing necessary size reduction):


Fits great, no contact with vehicle, no bumper modification:


Perfect...

[Bluebimma]

TOOO restrictive, its only single pipe exit.

[96cali]

FWIW I very much like how quiet Campaiars ti is.

[Bluebimma]

2.5, 0bd2 headers, y-pipe 2.5" no midpipes, mcoupe catback.....vs.




2.5, 0bd2 headers, y-pipe 2.5" no midpipes, 1.9L SS catback





Difference in size and peformance. And im sorry, but saying adding a heavy dual system to the car is pure nonsense. Y piping, 2.5" midpipe with or non-catted, then a single mandrel or crush bend under the subframe to a muffler, or a muffler before the subframe and piping to the bumper. There are many ways of cutting weight, adding power, and getting a better sound. Going with another stock exhaust system is.......not the best alternative out there. I went with one because i was low on funds and had sold my SS catback and original duals. If money isnt the problem, spend the 200$ to have an exhaust made. My duals, headback with resonators and mufflers was only 300$ installed same day, a single only costed me 50$. Should give you an idea.

Trying to bolt on

[campaiar]

Originally Posted by Bluebimma

TOOO restrictive, its only single pipe exit.

Lets race....

This is my daily driver and to be honest I didn't want to hear it growl everyday. For performance, I'll agree its probably terrible, but its a great "economical factory like" solution. Mine is quieter than both examples above.

Its all about what your looking for.

[Bluebimma]

<--- maybe i shouldve used one of those icons wth my post, it wasnt directed towards you fellow ohioan. Good thing you didnt misinterpret it.

But im always down for a race, even if i lose.

Originally Posted by campaiar

Lets race....



This is my daily driver and to be honest I didn't want to hear it growl everyday. For performance, I'll agree its probably terrible, but its a great "economical factory like" solution. Mine is quieter than both examples above.



Its all about what your looking for.

[Xenocide]

Just FYI guys, installed an OBD1 M3 midpipe tonight, You need to swap the center headshield support bracket from the M3, or 325 i guess, it has tabs where the rubber hangers mount, our 318ti's, atleast my 95 did not have the little tabs.

[J!m]

It's in the swap manual!

[Xenocide]

Nice! Hindsight, should have bought it, would have been totally worth it!

I haven't seen it but trying to think of any other small differences you could add....I encountered a lot on my 95

[Alexandre VTS]

Subscribed. I'm looking for a upgrade to my exhaust system

[Swap_File]

As a temporary solution, I am planning on:

Stock OBD1 manifold
Stock OBD1 midpipes cut off after the cats (Like campaiar)
Dual 2 inch to single 2.5 inch Y (Like campaiar)
2.5 inch pipe back to a standard aftermarket 2.5 inch muffler

The cross area of a single 1.75 inch pipe is about 2.4 square inches. For dual pipes that works out to be 4.8. A single 2.5 inch pipe is 4.9 square inches, so it should work fine.

And according to the tables in Maximum Boost, it is plenty big:


Eventually I will redo it all when I get some real headers, but this should be a cheap and easy solution for now.

Edit: Hey, campaiar, do you happen to remember how big of pipe was on the muffler you put in?

[campaiar]

It welded directly to the 2.5" Y-pipe without any issues. It does drop in size slightly after the weld. I'd have to measure it.

[Kilijan]

I'm pretty happy with my setup. The previous owner of my donor M3 had some shop do a hack job of installing new cats (which I will have my shop fix soon). I had ABC Muffler in Benicia start at the flanges and back. Installed a Flowmaster Y pipe, either 2.5" or 3" I don't recall. Then they mandrel bent some tubing and went into a Dynaflow 1 in, 1 out muffler. Looking at the car you wouldn't know it isn't stock without checking under the bumper. It isn't much louder than my e30, unless you really get on it. It can be made louder or quieter with different mufflers. Total cost $200. Also, right after I had the work done, I had to run to Concord BMW where I was able to park next to another Ti and compare the two.

[Xenocide]

thats about how mine looks

[JeroenB3]

I have the complete 3.2 M3 exhaust, offcourse the headers and mid section will fit.
But even with modifications, I can't use the rear muffler. It's simply to big, even if you modify it, there is still a distance from not even 1 inch between the half shaft and muffler...

I just recieved an OEM Z3 3.0 exhaust, will fit it tomorrow and post some pic's

I think the rubber hangers will be the same as the Ti, I don't know if the tips will fit with the 323Ti bumper.

I will probably just welt it to the M3 mid section.


Does this 3.0 exhaust restrict my (Euro) 3.2 engine bad?