Megan Racing headers

[Arith2]

https://web.archive.org/web/20191108220724/http://www.m3forum.net/m3forum/showthread.php?t=593595

Here's the link to the 100 page thread about the Megan headers. Good product with good service.

[bigjae46]

10 posts per page...so annoying! lol

I still have the Megan headers paired to the BW full race exhaust. I have them swaintech coated. I'm pretty sure it contributed to lower coolant and oil temps. I dyno'd at 316whp with a canned tune from Evolve. I've since flashed in a PCS tune, haven't dyno'd yet.

They went on pretty easily. Fitment was spot on, no complaints so far.

[JeremyJames]

10 posts per page...so annoying! lol

I still have the Megan headers paired to the BW full race exhaust. I have them swaintech coated. I'm pretty sure it contributed to lower coolant and oil temps. I dyno'd at 316whp with a canned tune from Evolve. I've since flashed in a PCS tune, haven't dyno'd yet.

They went on pretty easily. Fitment was spot on, no complaints so far.

Did the O2 sensor wiring harness have to be extended or were they a direct fit? I am keeping the stock exhaust, and only replacing the headers. I also just got mine back from Swaintech I got the white lightning coating. Hoping everything is a direct fit.

[bigjae46]

No, fit fine at least for the front sensors.

The bungs are in the same spot.


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[RoyalFlushness]

M3Forum.net archives giving me the feels

[Arith2]

Did the O2 sensor wiring harness have to be extended or were they a direct fit? I am keeping the stock exhaust, and only replacing the headers. I also just got mine back from Swaintech I got the white lightning coating. Hoping everything is a direct fit.

It changes where the post cat sensors are routed, but it's not like you need them. I simply keep them as seals. The EGT will be stretched but will connect. I cut the wires off the sensor and use that as the seal.

[Pklauser]

Any idea why they stopped selling these? Did AA sue them or something? 😅

[umichchris]

i still have these on my car...had them ceramic coated before hand. also paired them with STG 100cel high-flow cats in the section 1 (get rid of the catless smell), stock section 2 and Rogue Engineering El Diablo section 3 all with a Build Journal tune....runs strong!

[dukeofchen]

i still have these on my car...had them ceramic coated before hand. also paired them with STG 100cel high-flow cats in the section 1 (get rid of the catless smell), stock section 2 and Rogue Engineering El Diablo section 3 all with a Build Journal tune....runs strong!

What are the cats you used, any chance you could provide a link?

[Cronenberged]

Any idea why they stopped selling these? Did AA sue them or something? 😅

They can still be bought through their Ebay for 400-550

[Pklauser]

They can still be bought through their Ebay for 400-550

Maybe I'm dense, but I'm not seeing anything. Got a link perchance?

[Cronenberged]

Maybe I'm dense, but I'm not seeing anything. Got a link perchance?

Found this.

https://www.prestigeautolab.com/megan-racing-stainless-steel-header-exhaust-fits-bmw-m3-e46-00-06-mr-ssh-be46m3/

The ebay ones sell pretty quick and they usually only sell 50 at a time a few times a year. Looks like they're sold out right now. If you message the person with the listing for the Megan Racing Sec 1 & 2 on eBay they'll tell when they're expecting more inventory.

[bigjae46]

I don’t think AA makes their headers in house. I’d bet that they are rebadged Megan’s with a fancy AA emblem welded to it.

[umichchris]

What are the cats you used, any chance you could provide a link?

https://statusgruppe.com/product/bmw-e46-m3-section-1-with-catalytic-converter/

[Arith2]

I don’t think AA makes their headers in house. I’d bet that they are rebadged Megan’s with a fancy AA emblem welded to it.

The thread is gone with M3forum but that actually was confirmed. The first three batches were exactly AA headers made in the same factory. Then the thread was lost. The first batch seemed to be AA rejects because the flanges to the head were welded in the wrong direction. Megan Racing fixed them all no questions asked, and paid for shipping. Mine is from the second batch and I only know of two where the flanges were slightly off. One guy bored it out slightly and the other sent them back. There were at least 30 of us in the second batch.