Megan Racing Downpipe Install

[hystericfox]

I personally didn't have any problem with the Megan downpipe on my car at all, but I bought it with the intention of modifying it to make everything fit. I also had to massage the downpipe with a hand sledge to get a socket on the bolts to the O2 housing, but I'm not having and issues with fitment. The setup I settled on was a Megan downpipe, 3" high-flow cat, and a Thermal R&D catback section.
The Megan downpipe is intended to delete the stock cat, and the Thermal rear section is designed to bolt up to the stock cat. Fortunately, everything I'm using was 3" pipe, so it only took a few careful measurements and 2 cuts to get everything to fit as it's supposed to.
The only problem I ran into was finding 3" one-piece, weld-on flanges locally, so I went to A&A and got two 3" stainless steel band clamps. These are a piece of thin stainless steel with two bolts that wrap around the pipe and stretch to seal them together. Once I got them torqued down properly, they sealed perfectly, and I still don't have any leaks in my exhaust system.
You may get what you pay for, but I paid less because I completely understood that my system would never bolt up without modification. If anyone is going to use the method I used or one similar, I wouldn't hesitate to recommend the Megan downpipe. Just don't expect it to bolt up to everything.
If anyone wants to see pics of the way I have my exhaust installed, PM me.

 

[Mirage1]

Sorry for bringing up an old thread, but this seems pertinent. I just ordered this ebay DP two weeks ago. It was posted somewhere as being a Megan Racing DP an that the picture is an older style than what you get.

http://cgi.ebay.com/ebaymotors/ws/e...em=8014829431&sspagename=ADME:B:EOIBSAA:US:11

It looks great! Has a "Edge Racing" badge spot welded on that looks similar to the T-pro label the other guys has.

Go to put it on and the damn thing hits the transfer case! Can't get it fully over the O2 bolts. Not planning on leaving it on the transfer case and the cat-back portion does not line up because the T-case is in the way. So it is not just barely touching. I put the stock DP back on

It looks like a inch or two more piping on the O2 flange to first bend would get it to clear. Just not sure what it would cost to have someone modify it for me.

I'm going to get it on a lift tomorrow and mess with it a little more, but it doesn't look good. Anyone else ran in to problems where these cheap downpipes cut under the oil pan? I will try to get some pictures.

I guess this is just another post warning people to buy authentic Megan Racing or other brand name parts.

 

[Bigglesworth87]

I am actually going to have the exhaust shop figure something out with mine. The setup I am going with is the Megan Downpipe, high flow cat and Thermal R&D catback. I was trying to figure out if its possible to use a different sized nut for those bolts but still use the same thread pattern but I live in a small town and all of the hardware stores dont have what I am looking for. I will keep you posted on what ends up happening.

 

[Mirage1]

Everyone else seems to be having issues with the O2 bolts and the cat-back connection. Has anyone had trouble with one clearing the transfer case or am I just lucky?

Also, my O2 housing is off of my brothers 1995 GST. We noticed that it is slightly larger than my stock 1998 O2 housing. Might help with the O2 bolt fitment. I will let you know after test fitting it again today.

 

[m[ohio]]

I'm waiting for my T-Pros downpipe to get delivered. The tracking number says it should be here tomorrow. It was only $84 shipped from seller TuningPros on ebay. From the looks of the t-pros donwpipe that someone posted pics of earlier in this thread, it isn't going to be a perfect fit on my GSX, but it was only $84... I'll post and let you guys know how it fits (or doesn't fit)

 

[D_Eclipse9916]

Christ I had a real 3inch cat welded in anyway so the fitment to the cat-back was perfect cuz he jsut cut it to where it would fit. Then the 02 housing fitment problems, yes I could only get one bolt on, but COME ON do we expect a 3inch wide holes to fit with 2.25 inch wide studs? I am sorry but that is just plain stupid to think that would work. Aftermarket 02 housings are wider which is what the megan racing one was designed for...notice the holes are not just round but elongated circles so they can either put on a 2.5 or real 3 inch 02 housing.

Edit: I deleted my last sentence cause I got real frustrated...

 

[scottsee]

I started this tread to warn people about the fitment of this product onto the 95+ DSM. I had to eventually take the o2 housing off, cut & drill out the o2 studs and use the bolts and nuts supplied with the Megan Racing DP for it to mount up correctly. I ended up ordering a Megan Racings 3in inlet to 4in tip muffler off ebay for $60 and had a muffler shop make me a 3in catback for $150. Looks, sounds, feels great all for a total of $332

 

[eclipsegsx1736]

Sorry for bringing up an old thread, but this seems pertinent. I just ordered this ebay DP two weeks ago. It was posted somewhere as being a Megan Racing DP an that the picture is an older style than what you get.

http://cgi.ebay.com/ebaymotors/ws/e...em=8014829431&sspagename=ADME:B:EOIBSAA:US:11

It looks great! Has a "Edge Racing" badge spot welded on that looks similar to the T-pro label the other guys has.

Go to put it on and the damn thing hits the transfer case! Can't get it fully over the O2 bolts. Not planning on leaving it on the transfer case and the cat-back portion does not line up because the T-case is in the way. So it is not just barely touching. I put the stock DP back on

It looks like a inch or two more piping on the O2 flange to first bend would get it to clear. Just not sure what it would cost to have someone modify it for me.

I'm going to get it on a lift tomorrow and mess with it a little more, but it doesn't look good. Anyone else ran in to problems where these cheap downpipes cut under the oil pan? I will try to get some pictures.

I guess this is just another post warning people to buy authentic Megan Racing or other brand name parts.

The downpipe in that ebay ad picture is for a GS-T. The GSX downpipe has a straight shape design, the GS-T model has that bend as pictured. I believe the 1g GSX downpipe has a similiar bend.

 

[Mirage1]

Yeah, the picture was completely different than what he is selling. The downpipe ended up being correct.

Once I got the car up on a lift today, it made more sense that grinding the O2 bolt slots larger would help it fit. That made all the difference. That allowed it to clear the transfer case. Here are some basic pictures if anyone is interested.

http://www.mirage-performance.com/EclipseGSX/Exhaust/index.html

 

[Sharkcus]

edit: put the bracket back on, i didnt and it caused me an exhaust leak at the manifold/head. w/o the bracket the manifold is supporting the weight of the turbo & downpipe

That bracket doesn't hold anything. It keeps the stock oil feed line in place. You can do without it, especially if you have a SS oil feed line.

edit: I didn't realize this thread was so old....

 

[newdsmtnr96]

I have the same Damn issue! I contacted Megan racing and the guy seems to think I'm full of it. I tried to pound a socket on the nut to tighten it and doesn't work. I have pictures as well as I am uploading them right now.

<a href="http://s1271.photobucket.com/albums/jj627/pshgreentsi/Car%20stuff/?action=view&amp;current=DSC00907.jpg" target="_blank"><img src="http://i1271.photobucket.com/albums/jj627/pshgreentsi/Car%20stuff/DSC00907.jpg" border="0" alt="Photobucket"></a>

<a href="http://s1271.photobucket.com/albums/jj627/pshgreentsi/Car%20stuff/?action=view&amp;current=DSC00910.jpg" target="_blank"><img src="http://i1271.photobucket.com/albums/jj627/pshgreentsi/Car%20stuff/DSC00910.jpg" border="0" alt="Photobucket"></a>

<a href="http://s1271.photobucket.com/albums/jj627/pshgreentsi/Car%20stuff/?action=view&amp;current=DSC00906.jpg" target="_blank"><img src="http://i1271.photobucket.com/albums/jj627/pshgreentsi/Car%20stuff/DSC00906.jpg" border="0" alt="Photobucket"></a>

<a href="http://s1271.photobucket.com/albums/jj627/pshgreentsi/Car%20stuff/?action=view&amp;current=DSC00904.jpg" target="_blank"><img src="http://i1271.photobucket.com/albums/jj627/pshgreentsi/Car%20stuff/DSC00904.jpg" border="0" alt="Photobucket"></a>

 

[gprix1]

I put mine in a vise and crushed it a little where the socket was making contace. Was easy, just two small dents and bolted right up. Also ground a bit of the weld after so the nut would sit flat. It's a whole lot easier if the O2 housing is off and you can test fit everything on the bench.

 

[newdsmtnr96]

Yeah, We will see what megan racing does cause its a issue with a lot of awd cars. The one I bought for my gst fit perfect. Until now I was really happy with Megan racing.

 

[BoostKrazy]

yup i had same problem didnt fit stock 02 or o2 dump i had to customized cost a little extra

Im running a punishment DP with a megan racing catback, no cat...
Everything bolted right up perfectly, EXCEPT, the peice right in between the DP and catback, because one flange is crooked.. easy cut and weld on 1the flange, done.. sounds mean too.