S54 Swap Exhaust systems

[Shftr8]

Yeah, I'm not sure they would fit a RHD. My guess is probably not without modification. I was planning on just using US headers with the cats cut off and vbands installed, but the megans were cheap enough and look like they will allow me to reuse part of my E46 M3 section 1, which should save me a bit of headache and money, so I figured they are worth a try.

What about RHD Euro headers? Will those work on a RHD E30?

Yea my problem is I didn't want to spend $800+ on a set of headers that I would have to cut up to try and make work. But these are reasonable enough to give it a shot. I cut the cats off my stock headers and made them work but the way the exhaust shop set up the Y pipe just doesn't make sense and I think I need to go to a larger diameter pipe anyways.

[R3VM3UP]

Yeah, I'm not sure they would fit a RHD. My guess is probably not without modification. I was planning on just using US headers with the cats cut off and vbands installed, but the megans were cheap enough and look like they will allow me to reuse part of my E46 M3 section 1, which should save me a bit of headache and money, so I figured they are worth a try.

What about RHD Euro headers? Will those work on a RHD E30?

[Shftr8]

No, those look like the generic eBay ones that are very hit or miss like you've experienced. I'm talking about these.

https://m.ebay.com/itm/MEGAN-RACING-STAINLESS-STEEL-6-2-EXHAUST-HEADERS-FOR-00-06-BMW-E46-M3/182837560459?epid=16007414669

They look suspiciously like the active autowerke headers and I wonder if Megan is the OEM for Active. This thread here has some good feedback so far.
http://www.m3forum.net/m3forum/showthread.php?t=593595

That's interesting. Those do look far superior to the ones I ordered. Still have no idea if they would fit a RHD e30 though.

[R3VM3UP]

No, those look like the generic eBay ones that are very hit or miss like you've experienced. I'm talking about these.

https://m.ebay.com/itm/MEGAN-RACING-STAINLESS-STEEL-6-2-EXHAUST-HEADERS-FOR-00-06-BMW-E46-M3/182837560459?epid=16007414669

They look suspiciously like the active autowerke headers and I wonder if Megan is the OEM for Active. This thread here has some good feedback so far.

http://www.m3forum.net/m3forum/showthread.php?t=593595

[Shftr8]

The Megan ones are getting great reviews on M3F in terms of fitment. Comparing the design and welds they are clearly not the same as the generic ebay headers that cost $100. I don't expect I'll have much of a problem with them.

Your talking about these? http://www.meganracingperformance.co...-p-609554.html


I'm sure there are multiple people making headers in china but for $125 they are definitely Chinese made. Maybe I just got a defective set. I would like to know how they turn out. I'm not happy with my set up I have now and want something different (stock headers with the cat cut off)

[R3VM3UP]

Be careful with cheap sets. I bought a cheap set off ebay and the manifold bolt holes weren't even close to lining up.

The Megan ones are getting great reviews on M3F in terms of fitment. Comparing the design and welds they are clearly not the same as the generic ebay headers that cost $100. I don't expect I'll have much of a problem with them.

[Shftr8]

Thanks for the feedback on header fitment guys. I'm planning to try the new Megan Racing S54 headers since they seem to be getting good reviews on the E46 and they are very reasonably priced. I expect I'll need to use a treehouse style FCAB to allow them to fit without modification. I'll be using them with an Arc Asylum modified subframe, and I plan on using revshift mounts.

I'm thinking I'll try to reuse some of the stock E46 M3 section 1 that I have to interface with the headers. Beyond that I'm not 100% sure where to go with the exhaust but it seems like a merge into a 3" at approximately the same position as the crossover on the E46 M3 is the easiest solution and likely pretty well optimized for maximizing power.

Be careful with cheap sets. I bought a cheap set off ebay and the manifold bolt holes weren't even close to lining up.

[R3VM3UP]

Thanks for the feedback on header fitment guys. I'm planning to try the new Megan Racing S54 headers since they seem to be getting good reviews on the E46 and they are very reasonably priced. I expect I'll need to use a treehouse style FCAB to allow them to fit without modification. I'll be using them with an Arc Asylum modified subframe, and I plan on using revshift mounts.

I'm thinking I'll try to reuse some of the stock E46 M3 section 1 that I have to interface with the headers. Beyond that I'm not 100% sure where to go with the exhaust but it seems like a merge into a 3" at approximately the same position as the crossover on the E46 M3 is the easiest solution and likely pretty well optimized for maximizing power.

[Staszek]

Post up some pics when you have them installed. Really interested in how they fit in an e30.

Will do, although it probably wont be till summer some time. Still need to take the old engine out and do the front suspension. The car is resting outside for now

[Shftr8]

Got ya didnt see that.

Post up some pics when you have them installed. Really interested in how they fit in an e30.

[Staszek]

Well like the post above ergen makes a rhd specific headers but pretty pricey compared to status groups set

Got ya didnt see that.

[Shftr8]

Left hand drive, the steering shaft is on the left the headers are on the right.

Not sure how there will be interference.

Well like the post above ergen makes a rhd specific headers but pretty pricey compared to status groups set

[Staszek]

Is this for a RHD car? wondering how well the status groupe headers fit around the steering shaft?

Left hand drive, the steering shaft is on the left the headers are on the right.

Not sure how there will be interference.

[Shftr8]

I have S54 Status Groupe Headers
Following Jordan to the Cats, I also picked up some N54 CATs, (his maybe N55) to stay OEM.
After that instead of putting it through a 2 to 1 muffler, I am putting it through a magnaflow muffler that has an X Pipe built in so I can follow closer to the original S54 setup with dual in dual out.

Is this for a RHD car? wondering how well the status groupe headers fit around the steering shaft?

[Staszek]

I am actually going with Jordan's M54 setup with a slight twist.

This is his setup.


Here is where I am differing.

I have S54 Status Groupe Headers
Following Jordan to the Cats, I also picked up some N54 CATs, (his maybe N55) to stay OEM.
After that instead of putting it through a 2 to 1 muffler, I am putting it through a magnaflow muffler that has an X Pipe built in so I can follow closer to the original S54 setup with dual in dual out.


Last but not least I am finishing it off with an E36 M3 exhaust. It will probably be a bit quiet but I want the car sounding closer to stock.